AC Installation in Leawood, KS
A new air conditioner is a 12-to-15-year decision, and in a humid Johnson County summer the wrong size is something you feel every day. Too big, and it cools fast, shuts off, and never runs long enough to pull the humidity out — a house that’s cold and clammy at 72°F. Too small, and it can’t keep up on a 95°F afternoon. 7th Degree Heating and Air installs cooling systems in Leawood that are sized with math, not guesswork, and built for the climate they have to live in.
Sized with Manual J, Not a Tape Measure
Every install starts with an ACCA Manual J load calculation — square footage, insulation, window area and orientation, and air leakage all feed the number — followed by Manual S equipment selection and a Manual D check that your ductwork can carry the airflow. This matters more in Leawood than people expect: a tightly sealed 2015 south-Leawood build carries a far lower load than an original-windows 1960s ranch north of I-435, and “a ton per 500 square feet” gets both wrong. We size for the latent (humidity) load too, because in Climate Zone 4A removing moisture is half the job.
What a 7th Degree Installation Includes
- Load calculation and equipment selection matched to your home, not a rule of thumb.
- R-454B-compliant equipment meeting the current refrigerant standard, so you’re not buying into a phased-out system.
- Proper line set sizing and condenser placement, including shade and clearance considerations for hot south-facing walls.
- Removal and disposal of the old unit, with refrigerant recovered per EPA Section 608.
- Permits pulled through the Johnson County building department, and warranty registered on your behalf.
- Startup verification — superheat, subcooling, and airflow checked and documented, not assumed.
Frequently Asked Questions
- How long does an AC installation take?
- A straightforward replacement of an existing system is typically a single day. Jobs that involve new line sets, electrical changes, ductwork modifications, or a switch to a heat pump or different configuration can run longer. We give you a realistic timeline with the quote, not an optimistic one.
- How do I know what size air conditioner I need?
- From a Manual J load calculation, not from the size of your old unit — which may have been wrong to begin with. We measure your home’s actual load and select equipment to match. In our humid climate, right-sizing is what lets the system run long enough to dehumidify instead of short-cycling.
- Is a higher-efficiency (SEER2) system worth the cost?
- Often, especially given how hard a system runs through a Johnson County summer, but it depends on how long you’ll stay in the home and how the payback pencils out against the upfront cost. We’ll show you the efficiency options and the honest math rather than pushing the most expensive unit.
- What is R-454B and will my new system use it?
- R-454B is the lower-global-warming-potential refrigerant that replaced R-410A in new residential equipment as of the 2025 transition. Yes, current new systems use it. Installing to the current standard means your equipment and its parts supply stay supported for the long haul.
- Do you remove and dispose of my old unit?
- Yes. We recover the old refrigerant per EPA Section 608, haul away the old equipment, and handle disposal — it’s part of the installation, not an add-on.
Contact 7th Degree Heating and Air
Serving Leawood, Overland Park, Prairie Village, Mission, Merriam, and Lenexa with right-sized AC installations built for Johnson County summers.
- 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)