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Furnace Installation and Replacement in Green Country
Stay Warm With the Right System, Installed Right
When your furnace has reached the end of its life, repair costs are stacking up, or you want to upgrade to a high-efficiency model, Cool Down Heating and Air handles the full replacement process. We size every furnace using Manual-J load calculations, complete most residential installations in a single day, and back every job with a written warranty, a 1-year labor warranty on full system swaps, and our 100% satisfaction guarantee.
- One-Day Installations Available
- Financing for Qualified Homeowners
Furnace Installation for Green Country Homes
Upgrading from an older 80% AFUE furnace to a high-efficiency 96% AFUE model reduces fuel consumption by roughly 20% for the same amount of heat. For Oklahoma homeowners running their furnace three to four months a year, those savings add up over the life of the equipment. But efficiency rating alone doesn’t determine comfort. Proper sizing matters just as much. An oversized furnace short-cycles, wastes fuel, and creates temperature swings. An undersized furnace runs constantly and can’t keep up on the coldest nights.
Cool Down uses Manual-J calculations to match the furnace to your home’s exact heating load. We don’t guess, and we don’t just install the same size that was there before. If the old furnace was the wrong size, we’ll get it right this time.
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Signs You Need a New Furnace
Furnace Is 15 to 20+ Years Old
Gas furnaces typically last 15 to 25 years, depending on maintenance history. Over the past 20 years, parts have become harder to find, and efficiency has degraded significantly even in well-maintained units.
Cracked Heat Exchanger
A cracked heat exchanger is a carbon monoxide hazard and is generally not cost-effective to repair on an older furnace. Replacement is the safest and most practical solution.
Repair Costs Exceeding Half the Price of a New System
Once repair bills cross the 50% threshold of replacement cost, a new furnace makes more financial sense.
Rising Gas or Electric Bills Without Increased Usage
Older, lower-AFUE furnaces waste a larger percentage of fuel as heat goes up the flue instead of into your home. A modern high-efficiency furnace captures more of that energy.
Another Company Recommended Replacement
Get a free second opinion from Cool Down. We’ll evaluate whether replacement is truly necessary or if a repair can safely extend the system’s life.
Furnace Options We Install
- Standard Efficiency Gas Furnace (80% AFUE)
A reliable, cost-effective replacement that meets federal minimum efficiency requirements. Good for homeowners focused on a lower upfront cost.
- High-Efficiency Gas Furnace (96%+ AFUE)
Captures nearly all the fuel’s heat energy and vents through PVC instead of a traditional flue. Reduces fuel consumption by up to 20% compared to 80% AFUE models. Financing available.
- Electric Furnace Replacement
For homes without natural gas service. We size and install electric furnaces matched to the home’s electrical capacity and heating load.
- Dual-Fuel System (Heat Pump + Gas Furnace)
Pairs a heat pump for efficient moderate-weather heating with a gas furnace backup for extreme cold. The system automatically switches between the two based on outdoor temperature. See our heat pump services page .
Benefits of a New Furnace
Lower Heating Bills
High-efficiency furnaces use less fuel to produce the same heat output. The savings are most noticeable during Oklahoma’s coldest months.
Safer Operation
New furnaces come with modern safety controls, sealed combustion chambers, and fresh heat exchangers. No CO risk from cracked or corroded components.
Quieter Performance
Modern variable-speed blower motors and two-stage burners run quieter and more evenly than older single-stage equipment.
Reliable Warranty Protection
New equipment includes a manufacturer’s warranty plus our 1-year labor warranty on full system swaps. Protected from day one.
What Furnace Installation Includes
Every installation starts with a free in-home estimate. We assess the existing system, run Manual-J calculations, and present equipment options with pricing. Once approved, we schedule installation, typically within a few days.
On installation day, we remove the old furnace, install the new unit, connect gas and electrical, install the new thermostat, test the entire system through multiple heating cycles, verify CO-safe operation, and clean up the work area. Most standard furnace replacements are completed in one day. We walk you through the new system, thermostat, and filter maintenance before we leave.
Current special: $200 off any full system replacement, plus a complimentary smart or WiFi thermostat. Financing available. See all offers on our specials page.
From Quick Fixes to Full System Swaps
Not sure what you need? Ask for a free second opinion.
Commercial HVAC
Light commercial service under 25 tons for offices, restaurants, and retail.
Duct Installation & Repair
Fix leaky, undersized ductwork for better airflow and efficiency.
New Construction HVAC
System design and install for new builds, residential and light commercial.
Built on Honesty, Backed by 25+ Years of Experience
Highlights the company’s strongest trust signals in a quick, easy-to-scan format. Each card reinforces credibility and helps visitors feel confident about choosing the company.
Licensed, Bonded & Insured
Licensed, bonded, and fully insured for your peace of mind. Oklahoma License #099177.
We Stand Behind Our Work
Every full system swap includes a 1-year labor warranty plus a 100% satisfaction guarantee.
No Hidden Fees
Expect clear explanations and honest pricing upfront, with no invoice surprises.
Free Second Opinions
Unsure about a repair or a new system? We'll give you a straight answer, no charge.
Hear It From Your Neighbors
Not sure what you need? Ask for a free second opinion.
- Shelly cruise
This is the second time Rick has come out and fixed my unit from someone else messing it up! He’s very honest reliable and does a good job my AC is up and running the same day and only needed a relay switch to fix it! I was told I needed a whole new unit! I’m so grateful for this honest licensed company that helped me and fixed someone else’s sanity! I highly recommend cool down heating and air and Rick!
- pamela rentie
Rick came out to look at my air unit and explained everything to me on how the process works, what to expect, how much air units run and also told me about air conditioner evaporator. After talking to him I know a lot more about the air units, very pleased with the way he explained things.
- Lee ann riffle
I can always count on Brian to help me out. I have used his services for a few years now. I would highly recommend him.
- Shelly cruise
This is the second time Rick has come out and fixed my unit from someone else messing it up! He’s very honest reliable and does a good job my AC is up and running the same day and only needed a relay switch to fix it! I was told I needed a whole new unit! I’m so grateful for this honest licensed company that helped me and fixed someone else’s sanity! I highly recommend cool down heating and air and Rick!
- pamela rentie
Rick came out to look at my air unit and explained everything to me on how the process works, what to expect, how much air units run and also told me about air conditioner evaporator. After talking to him I know a lot more about the air units, very pleased with the way he explained things.
- Lee ann riffle
I can always count on Brian to help me out. I have used his services for a few years now. I would highly recommend him.
Proudly Serving Claremore and All of Green Country
In Claremore and nearby Rogers County towns, Cool Down Heating and Air is your trusted heating and cooling team. Serving the Tulsa metro and Green Country, we provide honest pricing, clean work, and skilled technicians.
From Claremore to Rogers County and across the Tulsa metro along Route 66, we deliver honest pricing and quality work with every call.
Tulsa County
From Claremore to Rogers County and across the Tulsa metro along Route 66, we deliver honest pricing and quality work with every call.
Practical HVAC Tips & Insights
Straightforward heating and cooling advice from your local Green Country team.
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Furnace Installation Questions
We believe every homeowner deserves a straight answer, no jargon, no runaround.
⚡ 24/7 Emergency Service
AC or furnace down? We answer around the clock for urgent calls across Green Country.
How much does a new furnace cost?
Residential furnace installations typically range from $3,500 to $8,000+, depending on the equipment, efficiency rating, and scope of work. We provide a detailed written quote with every estimate.
How long does installation take?
Most standard furnace replacements are completed in one day.
What AFUE rating should I choose?
80% AFUE meets the minimum and costs less upfront. 96%+ AFUE costs more but saves roughly 20% on fuel over the system’s life. We’ll help you compare the total cost of ownership.
Do you offer financing?
Yes. Financing options are available for all installations.
Should I replace my furnace and AC at the same time?
If both are aging, replacing them together ensures compatibility, maximizes efficiency, and avoids a second installation. The $200-off special applies to full system change-outs.
