Furnace Installation in Leawood, KS

A furnace in Leawood has to deliver on the coldest night of a Johnson County winter — a roughly 13°F design low, with cold snaps that dip lower. That’s not the night to learn the unit was sized by guesswork or vented wrong. 7th Degree Heating and Air installs gas and electric furnaces throughout Leawood, sized with a load calculation, matched to your home and budget, and started up with combustion verified and carbon monoxide checked — from a team based right here on Catalina Street.

Right for Your Leawood Home

Leawood’s housing range changes the furnace decision. An older north-of-I-435 home may have an aging furnace squeezed into a tight mechanical closet with original ductwork, where a careful replacement and airflow improvements matter as much as the unit itself. A newer south-Leawood build is tightly sealed and well-insulated, carrying a lower heat-loss load that demands honest sizing rather than just matching the old nameplate. We run an ACCA Manual J calculation, then Manual S to match equipment, and we’ll walk you through the real tradeoff between a standard 80% AFUE furnace and a high-efficiency 90%+ condensing unit — the latter burns less gas but needs PVC venting and a condensate drain.

What Our Leawood Installation Includes

• Manual J load calculation sized to your home, with single-stage, two-stage, or modulating options explained.
• Code-compliant venting — correct flue or PVC for the furnace type.
• Gas line and pressure verification on your natural gas service.
• Old furnace removed and disposed of.
• Permits pulled through the Johnson County building department, warranty registered.
• Combustion verified on startup — manifold pressure set, carbon monoxide measured air-free.

Frequently Asked Questions

What size furnace does my Leawood home need?

The size a Manual J load calculation says you need, not the size of the old furnace, which may have been oversized. We measure your home’s heat loss — square footage, insulation, windows, air sealing — and select to match. That’s especially worth doing in Leawood, where an older north-side home and a newer south-side build carry very different loads.

Should I get an 80% or a 90%+ AFUE furnace?

AFUE is how much fuel becomes usable heat. An 80% furnace is cheaper up front and uses standard metal venting; a 90%+ condensing furnace captures more heat, vents through PVC, and needs a condensate drain, saving on gas over time. Which one pencils out depends on your home and how long you’ll stay — we’ll run the comparison rather than assume.

Gas furnace, electric, or a heat pump for my Leawood home?

Most Leawood homes are on natural gas, and a gas furnace is often the most cost-effective heat for our winters. A heat pump or dual-fuel system can make sense depending on your energy costs and goals. We lay out the options for your specific home rather than pushing one path.

Do you verify safety after installation?

Always. We set manifold gas pressure to spec, measure carbon monoxide air-free at startup, confirm the venting draws correctly, and verify the heat exchanger and safeties. A furnace is a combustion appliance, and we don’t call an install finished until it’s confirmed safe.

How long does a furnace installation take?

A standard replacement is usually a single day. Switching efficiency types (which changes the venting), relocating the unit, or adding gas or electrical work can extend it. We give you a realistic timeline with the quote.

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Contact 7th Degree Heating and Air

Your local Leawood furnace installation team, also serving Overland Park, Prairie Village, Mission, Merriam, and Lenexa with 24/7 emergency service.

• Emergency Line (24/7): (913) 354-6552
• Address: 12720 Catalina St, Leawood, KS 66209
• Email: info@7thdegreeheatingandair.xyz
• Johnson County Class “DM” Mechanical License: DM-24-11873
• EPA Section 608 Universal: EPA-608-U-457921

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Office Hours

• Emergency Service: 24 hours a day, 7 days a week
• Office Staff: Monday – Saturday, 9:00 AM – 5:00 PM
• Sunday: By appointment
• Closed: Holidays (emergency line always active)