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2024

Last updated:

Best HVAC & Furnace Repair Services in Garland

Our Recommended Top 20

We did the research for you!

  • Licensing
  • User Reviews
  • Mystery Shopping Calls

Our goal is to connect people with the best local professionals. We scored Garland HVAC & Furnace Repair Services on more than 25 variables across five categories, and analyzed the results to give you a hand-picked list of the best.

74Reviewed

52Curated

20Top Picks

Learn about our selection process.

Providers

featured provider = Featured Provider

Website
Wylie, TX 75098
  • Air Conditioning
  • Furnaces
  • Thermostats
  • 24/7

Why choose this provider?

Allstars Electric Heating & Air is a full-service HVAC contractor that offers air conditioner repair services near Garland and provides 24/7 emergency assistance for heating and cooling emergencies. HVAC services provided in addition to AC repair include air conditioner installations, heat pump repairs and installs, furnace installations, ductless system installs, ductwork repair and replacements, and thermostat installations including Wi-Fi enabled options. The business is licensed and insured, and all technicians are highly trained.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.6
Google
4.7 / 5 (84)
Yelp
4.5 / 5 (7)
Angi
3.3 / 5 (3)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
4.5
Responsiveness
Friendliness
Helpfulness
Detail

Website
10874 Plano Rd Ste D, Dallas, TX 75238
  • Air Conditioning
  • Furnaces
  • Thermostats
  • Duct Work
  • 24/7
  • Trane

Why choose this provider?

Quality 1 Energy Systems is a family business that has provided commercial and residential HVAC services near Garland since 1989. The experts deliver heating and cooling solutions, including repair, new installation, replacement, and maintenance of parts such as variable refrigerant flow systems, compressors, gas and electric furnaces, and heat pumps. They also install carbon monoxide detectors and humidification and filtration systems to boost the quality of indoor air. Quality 1 Energy Systems deals with ductwork cleaning and installation.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.9
Google
4.9 / 5 (192)
Facebook
5.0 / 5 (23)
Yelp
4.0 / 5 (4)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
4.8
Responsiveness
Friendliness
Helpfulness
Detail

Website
810 Foxwood Lane, Wylie, TX 75098
  • Air Conditioning
  • Furnaces
  • Carrier
  • Trane

Why choose this provider?

D's Enterprise Air Conditioning & Heating is a full-service HVAC provider that offers air conditioning repair services near Garland. The company is family-owned and operated, and its technicians are state-certified and highly trained. The business services all HVAC makes and models, and its additional services include air conditioner installations, duct cleaning, repairs, and duct blast testing, furnace installs and repairs, seasonal maintenance programs, coil repairs, AC freon leak repairs, condenser fan repairs, and thermostat repairs and replacements.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.8
HomeAdvisor
4.9 / 5 (80)
Google
4.7 / 5 (27)
Facebook
4.8 / 5 (21)

(+2 additional sources)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
207 E US Highway 80, Forney, TX 75126
  • Air Conditioning
  • Furnaces
  • Tune Up
  • Thermostats
  • Duct Work
  • Central Air
  • 24/7
  • Carrier
  • Trane

Why choose this provider?

Willard Heating and Air Conditioning is a family-owned and operated HVAC business in Dallas. The company has over 50 years' experience in the industry and offers free in-home evaluation. Primary services include AC installation, repair and maintenance, and furnace installation and repair. Additional services offered by Willard Air include duct sealing, attic insulation, and aerosol duct sealing. All the technicians working with Willard are certified and undergo background and drug tests. The company has associations with ACCA and NATE.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.9
Google
4.9 / 5 (2197)
Facebook
1.0 / 5 (2)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
2119 Daniel Way, Carrollton, TX 75006
  • Air Conditioning
  • Furnaces
  • Tune Up
  • 24/7

Why choose this provider?

All Season Services has been offering heating, ventilation, and air conditioning services in Carrollton for almost two decades. The group's services include commercial HVAC installs; new construction projects; and residential repairs, replacements, and installations of air conditioners, heat pumps, ductless systems, and furnaces. Tune-ups include everything from compressor checks and Freon level checks to the washing of outdoor condensers. The business prides itself on transparency, is licensed, and offers indoor air quality solutions as well.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0
Facebook
5.0 / 5 (11)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
3120 Denton Dr, Garland, TX 75041
  • Air Conditioning
  • Furnaces
  • Thermostats
  • Duct Work

Why choose this provider?

GAC Service Company has been handling HVAC services for commercial and residential customers in Garland since 1977. The group provides full system planning and installs, preventative maintenance, and 24-hour emergency repairs of air conditioners, furnaces, air handlers, heat pumps, and thermostats. HVAC maintenance agreements are also available, and checks cover refrigerant leaks/level checks and carbon monoxide leaks. Additional services include air cleaners/filtration products, humidifiers and dehumidifiers, and ductwork.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0
Google
5.0 / 5 (23)
Angi
4.9 / 5 (9)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
Garland, TX 75040
  • Air Conditioning
  • Furnaces
  • Tune Up
  • Carrier
  • Trane

Why choose this provider?

Joe Cook Heating Air Conditioning serves residential, new construction, and light commercial customers in Garland. Certified techs can repair all brands of air conditioning units, air to air heat pumps, and gas furnaces and also handle new installs, preventative maintenance, and wine chiller services. The team boasts almost 100 years of combined experience, is a factory authorized dealer for Lennox, and offers discounts to senior citizens. The company holds numerous certifications, including NATE, EPA, and for refrigeration.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.6
Angi
5.0 / 5 (15)
Google
4.2 / 5 (5)
Yelp
3.5 / 5 (4)

(+1 additional source)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
10226 Plano Rd Ste 104, Dallas, TX 75238
  • Air Conditioning
  • Furnaces
  • Tune Up
  • Thermostats
  • Duct Work
  • 24/7

Why choose this provider?

Air Force One Air Conditioning is a family-owned and operated air conditioning company based in Plano, Texas. The company's specialists have over 25 years of experience in AC installation and replacement, AC repair, thermostat installation and repair, mini-splits, commercial HVAC services, heating repair, and HVAC maintenance. I t also offers 24/7 emergency services and low-interest financing. Air Force One Air Conditioning is a member of Rheem Pro partners and holds an accredited A+ Better Business Bureau rating.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.2
Yelp
4.0 / 5 (23)
Facebook
4.4 / 5 (6)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
1782 W McDermott Dr, Allen, TX 75013
  • Air Conditioning
  • Tune Up
  • Boilers
  • 24/7
  • Carrier

Why choose this provider?

Mascot Building Services is a heating and cooling service provider in Allen backed by over 50 years of experience. The group works on residential and commercial air conditioners, furnaces, and indoor air quality units and handles installations, replacements, repairs, and tune-ups (including Freon-leak and compressor checks). The company employs licensed technicians/installers who are certified as CGPs as well as by NATE, EPA, and leading manufacturers and also regularly works with builders and remodelers.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
Sachse, TX 75048
  • Air Conditioning
  • Furnaces
  • Tune Up
  • Thermostats
  • Boilers
  • Duct Work
  • Central Air
  • 24/7
  • Carrier
  • Trane

Why choose this provider?

CJ Air Solutions Inc. repairs, maintains, and installs heating and air conditioning systems in Garland, Texas. It provides furnaces, heat pumps, ductless systems, and central air conditioners. The professionals here have more than half a century of combined industry experience, and they are fully licensed and insured by the State of Texas. People speak highly of the honest and fair treatment that they get with CJ Air Solutions Inc., and they are grateful for the reasonable prices. They also benefit from the company's 100% customer satisfaction guarantee. The company is open for business 24 hours a day, seven days a week, and it offers free in-home estimates for all of its clients. Its service area includes Sachse, Richardson, Rowlett, and Murphy.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0
Yelp
5.0 / 5 (5)
Angi
5.0 / 5 (5)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
3250 Story Road West, Irving, TX 75038
  • Air Conditioning
  • Furnaces
  • Tune Up
  • Carrier
  • Trane

Why choose this provider?

Reliant Air Conditioning is a licensed HVAC contractor that has provided air conditioning repair services near Garland since 1983. The company's technicians service all heating and cooling makes and models, and they are NATE-certified. Additional HVAC services offered include heat pump repairs and installations, furnace diagnostics and repairs, air conditioner and furnace seasonal maintenance, and air conditioner installations. The business serves residential and commercial customers, and it is a certified Energy Star provider.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.7
Google
4.7 / 5 (1037)
Facebook
5.0 / 5 (442)
Yelp
3.5 / 5 (76)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
746 Lingco Dr, Richardson, TX 75081
  • Air Conditioning
  • Furnaces
  • Duct Work
  • Central Air

Why choose this provider?

Earthwise Home Services is an HVAC company in Dallas and Fort Worth areas. It takes a green approach in everything it does. The services offered are plumbing services, drain and sewer repair, replacement, and cleaning, water heater installation and repair, water filtration systems and HVAC system repair and maintenance. It has partnered with companies such as Trane, BBB Accredited Business, Ferguson, and Frymire Home Services. Customer reviews boast of technicians who have knowledge and solutions for any problem.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.7

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
6155 County Road 2597, Royse City, TX 75189
  • Air Conditioning
  • Furnaces
  • 24/7

Why choose this provider?

True Blue Heat and Air has served homes and businesses with HVAC services in the Garland area for over 25 years. Its professional technicians' upgrade and repair existing and install new HVACs, including mini-split ductless ones, and parts including freon, heat pumps, gas and electric furnaces, and air filters. True Blue Heat and Air's preventative maintenance services include lubricating moving parts and comprehensive HVAC system cleaning to increase the systems' functioning.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0
Facebook
5.0 / 5 (145)
Yelp
5.0 / 5 (20)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
4.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
4216 Main St, Rowlett, TX 75088
  • Air Conditioning
  • Furnaces
  • Tune Up
  • 24/7

Why choose this provider?

Moore AC & Heating Services is an HVAC company that has served in Dallas since 1986. It is a specialist in the field of heating and air conditioning. As a Bryant dealer, Moore AC & Heating has the following products available: air conditioners, heat pumps, gas furnaces, humidifiers, air cleaners, and zoning products. All the technicians are NATE-certified. The company is also affiliated with Service Roundtable, Rowlett Chamber of Commerce, RSES and National Comfort Institute.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.9
Google
4.9 / 5 (39)
Facebook
4.8 / 5 (29)
Angi
5.0 / 5 (27)

(+1 additional source)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
101 N Greenville Ave Ste 608, Allen, TX 75002
  • Air Conditioning
  • Furnaces
  • Tune Up
  • 24/7

Why choose this provider?

Central Mechanical is a locally owned and operated HVAC company in the area of Allen. Technicians specialize in high-efficiency home systems, can service and repair all AC brands for homes and businesses (including coolant leaks and compressor problems), and install and modify air conditioners and furnaces as well. Additional services cover HVAC design and planning, whole-house load calculations, ductwork design and balance, indoor air quality solutions, inspections, and maintenance agreements. The family business offers 24-hour emergency service as well.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
2813 Sachse Road, Wylie, TX 75098
  • Air Conditioning
  • Furnaces
  • Tune Up

Why choose this provider?

Montgomery HVAC Service Company assists residential and commercial customers with air conditioning repair services near Garland. Founded in 1961, the business is family-owned and operated, and all techs are licensed, insured, and EPA-certified. HVAC services offered include seasonal preventative maintenance programs, central air conditioning installations and inspections, ductless HVAC repairs and installations, heat pump repairs and installs, furnace repairs, inspections, and installations, and indoor air quality assessments and solution implementation.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.8
Google
4.9 / 5 (29)
Yelp
4.5 / 5 (11)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
6250 Lyons Rd Trlr 18, Garland, TX 75043
  • Air Conditioning
  • Furnaces
  • Tune Up

Why choose this provider?

Washburn Heating & A/C Service, Inc. has been a Garland HVAC service provider for almost 55 years. The group focuses on the repair and service of air conditioners and furnaces for residential and light commercial customers and can also advise on the best new HVAC installation. The family-owned and operated company is the only American Standard Customer Care Dealer in Garland and is used by realtors, businesses, and families alike.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0
HomeAdvisor
5.0 / 5 (2)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
2.5
Responsiveness
Friendliness
Helpfulness
––
Detail
––

Website
10763 Mapleridge Dr # 102, Dallas, TX 75238
  • Air Conditioning
  • Furnaces
  • Tune Up
  • Thermostats
  • Duct Work
  • Carrier

Why choose this provider?

Texas Air Zone has served the Dallas–Fort Worth metropolitan area for almost 20 years, helping residents to control the temperature in their home as well as reduce their energy bills. It stocks a wide variety of HVAC products -- including heat pumps, fan coils, gas furnaces, duct-free systems, packaged units, air cleaners, and thermostats. Local people hold the company in high regard for its professionalism and efficiency, and they are particularly grateful for the attentive customer service that they have come to expect. Texas Air Zone is a member of the Comfort Institute, and it is an accredited business with the Better Business Bureau. The technicians here are certified to a standard set by North American Technician Excellence. Free in-home consultations are available.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0
Google
5.0 / 5 (471)
Facebook
5.0 / 5 (71)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
1785 Interstate 30 Frontage Road, Rockwall, TX 75087
  • Air Conditioning
  • Duct Work
  • Carrier
  • Trane

Why choose this provider?

Firehouse Heating & Air has delivered light commercial and residential HVAC services near Garland since 2016. Its technicians install brand new systems and repair damaged components, including oil and gas furnaces, heat pumps, and air handlers. They also inspect existing and operating systems and develop the required maintenance plans, which entail lubricating fan motors and blades as well as adjusting refrigerant levels. Firehouse Heating & Air handles air duct cleaning to reduce health risks linked to poor indoor air quality.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
5.0

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

Website
10254 Miller Rd, Dallas, TX 75238
  • Air Conditioning
  • Furnaces
  • Tune Up
  • Duct Work

Why choose this provider?

Metro Heating & Cooling has been in the Dallas area as an HVAC company since 1976. It caters to both residential and commercial clients. The services offered are central heating services, ventilation systems, refrigeration services, air conditioning services, and indoor air quality. All technicians are NATE-certified and according to Metro Heating's must obtain safety certification through the Texas Safety Association. Metro Heating & Cooling has a Class A license in heating, ventilation, and air conditioning.

Reputation:

We scour the internet for reviews from well-known resources. Each provider is evaluated based on the quality and quantity of their reviews, their presence on multiple review sites, and their average minimum rating.
4.9
Google
4.9 / 5 (1133)

Professionalism:

We hire mystery shoppers to call our providers anonymously and evaluate them. Providers who respond quickly, answer questions thoroughly, and communicate politely score higher.
5.0
Responsiveness
Friendliness
Helpfulness
Detail

FAQs

  • How do residential HVAC systems work?

    Central HVAC systems use ductwork and mechanical blowers to deliver heating and cooling across a home’s primary living areas. Refrigerant-based systems, such as heat pumps and air conditioners, use pressurized gas that raises or lowers the temperature by absorbing heat. Their principal components include the evaporator coil, compressor, condenser coil, and blower. Furnaces generate heat by burning fuel, such as oil, propane, or natural gas. Energy from the burners is captured by a heat exchanger, and a flue exhausts combustion byproducts outdoors. Nowadays, homeowners can choose between dual-fuel systems, ductless heat pumps, and variable-speed models that provide enhanced comfort and efficiency.

  • How often do I need to schedule HVAC service for my system?

    Central heating and cooling systems should be serviced annually in the spring and fall. Air conditioners should be inspected every spring; furnaces should be tuned up in the fall, and heat pumps need to be serviced twice per year. Scheduling maintenance early in the season can help homeowners prevent breakdowns and avoid the rush.

  • Why do HVAC systems need regular maintenance?

    Preventive maintenance for HVAC equipment is just as important as an oil change for a car. Regular service visits increase the system’s efficiency, prevent unnecessary wear and tear, and detect problems before they worsen. For optimal results, technicians inspect all electrical and mechanical components. This type of maintenance extends the system’s lifespan, prevents safety hazards, and helps homeowners enjoy long- and short-term savings.

  • What’s the best way to care for an HVAC system in a multifamily investment property?

    HVAC maintenance helps landlords retain quality tenants and control their ownership costs. For best results, centralized and decentralized heating and cooling systems should be serviced in the spring and fall. Technicians can lubricate moving parts, measure refrigerant levels, clean the coils, and check the belts and bearings. Landlords should also consider supplying new air filters to tenants to prevent unnecessary wear and tear, and unit breakdowns related to restricted airflow.

  • What are the signs of a broken HVAC system?

    Heating and cooling systems contain hundreds of parts, which means that almost anything can go wrong. Some warning signs are obvious. For example, if the air conditioner is blowing hot air or if the furnace won’t shut off, it’s time to call a professional. Other malfunctions can cause subtle decreases in comfort and efficiency. Regardless of the problem, responding quickly is generally the best way to avoid more significant repairs and expenses. Homeowners can protect themselves by recognizing the following warning signs:

    • Unusually high energy bills
    • Excessive mechanical noise
    • Starting difficulties
    • Sudden shutdowns
    • Continuous airflow
    • Temperature imbalances
    • High humidity
    • Unpleasant odors
    • Ice buildup on the coils
    • Leaks or water damage

  • Does a home warranty cover HVAC repairs?

    Yes, many home warranty companies pay for HVAC repairs. This type of coverage may be standard or included as an optional add-on. In most cases, homeowners are responsible for an initial service fee. If the unit cannot be repaired, the company may pay for a replacement.

  • Will replacing the HVAC system increase my home’s value?

    While most homeowners only recoup 35% to 50% of their installation costs, a new HVAC system can be a major selling point that attracts potential buyers and results in a faster sale. The benefits depend on the local climate, the type of market, and the condition of the existing system. Aging or poorly maintained equipment may encourage buyers to submit lower offers, especially if problems are revealed during an inspection.