HVAC Services in Leawood and Johnson County
7th Degree Heating and Air handles the full range of residential and light-commercial HVAC work across Leawood and eastern Johnson County. Every service starts the same way — with measurement, not a sales script — and every recommendation is built for the climate this equipment actually has to survive: a mixed-humid Climate Zone 4A that swings from sub-zero January cold snaps to triple-digit August afternoons. Below are the categories we cover. Each links to a deeper page with the specific work involved.
Cooling
AC installation, repair, tune-ups, capacitor and compressor work, refrigerant service, and evaporator coil repair. In a humid summer climate, sizing for the latent load — the moisture your system has to remove, not just the temperature it has to drop — is the difference between a house that’s comfortable and one that’s merely cold and clammy. We also handle the ongoing R-454B refrigerant transition on new equipment.
Heating
Furnace installation, repair, and tune-ups; heat pumps; heat exchanger and boiler service; and gas line work. Johnson County’s roughly 13°F winter design temperature means a furnace has to deliver on the coldest nights of the year, and a cracked heat exchanger or a misfiring igniter is both a comfort and a safety issue. We verify combustion and check carbon monoxide air-free on every gas furnace we touch.
Indoor Air Quality
Duct cleaning, humidifiers and dehumidifiers, air purifiers, UV-C coil treatment, filter upgrades, and carbon monoxide testing. Local WaterOne hard water (roughly 5–8 grains per gallon) scales humidifier components faster than rated, and humid summers make dehumidification and clean coils a comfort and health priority. We tune air-quality equipment to local water and humidity, not generic intervals.
Maintenance
Seasonal tune-ups, full-system inspections, emergency repair, and custom maintenance plans. A spring AC tune-up that catches a failing capacitor or a low refrigerant charge before July is far cheaper than the mid-heatwave breakdown it prevents. Our plans are built around Johnson County’s water and humidity conditions, not a one-size template.
Installation & Upgrades
Full system replacement, ductless mini-splits, zoned systems, smart thermostats, thermostat repair, and air handler service. New-system work starts with an ACCA Manual J load calculation, then Manual S equipment selection and Manual D duct verification — because a 1960s north-Leawood ranch and a 2015 south-Leawood build carry very different loads, and tonnage by rule of thumb usually gets one of them wrong.
Commercial
Light-commercial HVAC, rooftop units, commercial maintenance, and service contracts for offices, retail, and small medical and dental spaces across Johnson County. Commercial work brings its own demands — ventilation requirements, rooftop access, and uptime that a business can’t afford to lose — and we plan for all of it.
Why 7th Degree
- Diagnose before we quote. Instruments first — static pressure, superheat and subcooling, combustion analysis — then the estimate.
- Priced in daylight. Every quote breaks out equipment, labor, and permit fees. No package pricing that hides margin.
- Local and licensed. Family-owned and veteran-owned in Leawood, with permits pulled through the Johnson County building department.
- Built for the climate. Equipment selected for Zone 4A humidity and Kansas temperature swings, not a generic spec sheet.
Frequently Asked Questions
- What HVAC services does 7th Degree Heating and Air offer?
- Six categories: cooling, heating, indoor air quality, maintenance, installation and upgrades, and commercial HVAC. That spans everything from a single AC repair or furnace tune-up to a full Manual J–sized system replacement or a commercial rooftop service contract.
- Do you handle both residential and commercial work?
- Yes. The bulk of our work is residential across eastern Johnson County, and we also serve light-commercial properties — offices, retail, and small medical and dental spaces — including rooftop units and ongoing service contracts.
- Why does Johnson County’s climate change which equipment is right for my home?
- Johnson County is in IECC Climate Zone 4A (Mixed–Humid). Summer humidity creates a large latent cooling load, so an oversized AC will short-cycle and leave the house damp, while winter design lows near 13°F mean heating capacity can’t be an afterthought. Right-sizing for both, rather than guessing tonnage, is what keeps a system efficient and comfortable here.
- Do you offer maintenance plans?
- Yes. We offer seasonal tune-ups and custom maintenance plans designed around local conditions — including the hard-water service intervals that WaterOne supply demands — to reduce breakdowns and extend equipment life.
- What equipment brands do you service?
- We service all major HVAC brands. On new installations, brand selection is driven by the Manual J load, the 2025 R-454B refrigerant transition, and your budget rather than by dealer incentives.
Contact 7th Degree Heating and Air
Whether it’s an emergency repair or a planned upgrade, our Leawood team serves Leawood, Overland Park, Prairie Village, Mission, Merriam, and Lenexa with 24/7 emergency response.
- 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
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)