Serving Gainesville, GA & Surrounding Areas
24/7 Emergency HVAC Service

For The Utmost Care,
Call Res Air!

Expert AC repair, heating installation & indoor air quality across Hall County. 20+ years of field experience.

600+

5-Star Google Reviews

20+

Years of HVAC Experience

100%

Customer Satisfaction

24/7

Emergency HVAC Service

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Our Services

FOR COMFORT YOU CAN COUNT ON, CALL RES AIR!

From emergency AC repair to full system installs — we handle every aspect of your home’s comfort with precision, honesty, and care.

Air Conditioning

Fast AC repair, replacement & maintenance to keep your home cool and comfortable in the Georgia heat.

Heat Pumps

Expert heat pump installation, tune-ups, and repairs for efficient year-round comfort and dependable performance in every season.

DUCTLESS MINI-SPLIT

Ductless mini-split solutions for targeted comfort, energy efficiency, and flexible heating and cooling in hard-to-condition spaces.

Heating

Professional heating repair, replacement, and maintenance to keep your system running safely, efficiently, and reliably when temperatures drop.

Indoor Air Quality

Improve the air inside your home with advanced indoor air quality solutions, including UV-light purification and duct cleaning services.

Air Conditioning

Fast AC repair, replacement & maintenance to keep your home cool and comfortable in the Georgia heat.

Heat Pumps

Expert heat pump installation, tune-ups, and repairs for efficient year-round comfort and dependable performance in every season.

DUCTLESS MINI-SPLIT

Ductless mini-split solutions for targeted comfort, energy efficiency, and flexible heating and cooling in hard-to-condition spaces.

Heating

Professional heating repair, replacement, and maintenance to keep your system running safely, efficiently, and reliably when temperatures drop.

Indoor Air Quality

Improve the air inside your home with advanced indoor air quality solutions, including UV-light purification and duct cleaning services.

Specials

Save Big, Current Specials

Save on HVAC repairs, maintenance, and new system installations with our current limited-time offers.

Up to

$1,500 Off

On High-Efficiency HVAC System Installations

* Mention this offer prior to scheduling service. Cannot be combined with any other offers and/or discounts. Cannot be applied to the dispatch fee.
Expires 04/30/2026

Free

Service Call with Repair

* Mention this offer prior to scheduling service. Cannot be combined with any other offers and/or discounts. Cannot be applied to the dispatch fee.
Expires 04/30/2026

15% OFF

Repairs for Maintenance Members

* Mention this offer prior to scheduling service. Cannot be combined with any other offers and/or discounts. Cannot be applied to the dispatch fee.
Expires 04/30/2026
Offers cannot be combined. Limit one per household. Must be mentioned at time of booking.

About Res Air

HVAC Experts You Can Trust

Res Air Heating & Cooling proudly serves Gainesville, GA and surrounding areas with honest HVAC services. From fast repairs to full system installations, our team is committed to getting the job done right the first time.

-Res Air Heating & Cooling

“We believe every homeowner deserves honest HVAC service, clear pricing, and work done right the first time.”

Every service we provide is backed by our commitment to quality workmanship and customer satisfaction. Whether it’s a quick repair or a full system upgrade, we treat your home with care and respect — just like it’s our own.

Reviews

What Our Customers Say

Why Choose Res Air

The Res Air Difference

We treat every home like it’s our own

Licensed & Certified HVAC Technicians

Our technicians are fully licensed, professionally trained, and committed to delivering safe, high-quality HVAC service you can trust.

Transparent, Upfront Pricing

No hidden fees. No surprises. Just honest, upfront pricing so you know exactly what to expect before any work begins.

Fast & Friendly Service

We respect your time. Our team arrives promptly, works efficiently, and treats your home with care and professionalism.

Our Workmanship Guarantee

We stand behind every job we complete. If something isn’t right, we’ll make it right — no shortcuts, no excuses.

5-Star Rated by Homeowners Like You

Homeowners across Gainesville trust Res Air for reliable service, honest work, and consistent 5-star experiences.

24/7 Emergency HVAC Service

Heating or cooling issue? We’re available day or night to restore comfort quickly when you need it most.

Flexible Payment Plans

Financing Available

Get the comfort you need today without the upfront cost. We offer flexible financing options with convenient monthly payments to fit your budget.

Whether it’s a repair or a full system replacement, our team will help you find a financing solution that works for you — with fast approvals and no hassle.

Service Areas

HVAC Services in Gainesville, GA & Surrounding Areas

We provide expert heating, cooling, and indoor air quality services across Gainesville, GA and nearby communities — delivering fast, reliable comfort you can count on.

Gainesville, GA

Flowery Branch, GA

Oakwood, GA

Buford, GA

Jefferson, GA

Alpharetta, GA

Baldwin, GA

Cleveland, GA

Dahlonega, GA

Hoschton, GA

Maysville, GA

Pendergrass, GA

Blog

HVAC Tips, Maintenance & Energy Savings

Understanding HVAC Systems

Call 999-999-9999 Your home is one of your biggest investments, and keeping it in good condition takes year-round attention. Regular maintenance not only protects the

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Top 5 Home Maintenance Tips

Call 999-999-9999 Your home is one of your biggest investments, and keeping it in good condition takes year-round attention. Regular maintenance not only protects the

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Seasonal Home Prep Checklist

Call 999-999-9999 As the seasons change, so do the demands on your home. From keeping your HVAC system running efficiently to protecting against extreme weather,

Explore More

Understanding HVAC Systems

Call 999-999-9999 Your home is one of your biggest investments, and keeping it in good condition takes year-round attention. Regular maintenance not only protects the

Explore More

Top 5 Home Maintenance Tips

Call 999-999-9999 Your home is one of your biggest investments, and keeping it in good condition takes year-round attention. Regular maintenance not only protects the

Explore More

Understanding HVAC Systems

Call 999-999-9999 Your home is one of your biggest investments, and keeping it in good condition takes year-round attention. Regular maintenance not only protects the

Explore More

FAQs

Frequently Asked Questions

Our team is available 24/7 to answer your questions and schedule fast service.

Costs vary by system type and the work involved. Common heating repairs range from $180 (hot surface igniter, flame sensor) to $800 (gas valve), with larger items like heat exchanger replacements running $1,500-$3,000. A standard heating tune-up is $55. Full system installations range from $4,500-$14,500 depending on equipment type, efficiency tier, and ductwork. Each repair starts with an $85 diagnostic and a written quote before any work begins.

Early fall — September or October — is the best window. Heating systems that sat idle through summer are most prone to failure in their first weeks of operation, and a fall inspection catches the components most likely to fail. Late-fall slots fill quickly across the area, so booking by October is the practical guideline.

Common causes include a failed hot surface igniter or flame sensor, a clogged condensate line on a high-efficiency furnace (which trips a safety switch), a failed pressure switch, gas supply issues, a thermostat fault, or a tripped breaker on the furnace circuit. A diagnostic identifies which is at play. Resetting power without addressing the underlying cause sometimes works briefly but rarely fixes the actual problem.

The decision usually turns on system age, the cost of the failed component, and the system's overall condition. Gas furnaces over 15 years old, units running R-22 (on heat pump systems), or systems with heat exchanger cracks or compressor failure often cross the replacement threshold. Newer systems or those with isolated component failures are usually worth repairing. We provide a written side-by-side comparison as part of major repair quotes.

Yes. We provide emergency heating service in Gainesville, GA, around the clock, with a response time of 24 hours or less during the heating season. Coverage includes Flowery Branch, Oakwood, Buford, and Jefferson alongside the Gainesville core. There's no trip fee on booked service.