AC Installation in Merriam, KS
A new air conditioner in Merriam should be the right size for the home and the right value for the budget — not the biggest unit a salesperson can move. Many Merriam homes are modest and older, and the smartest install is the one matched to the actual house. 7th Degree Heating and Air installs cooling systems across Merriam, sized with a load calculation, with honest options laid out plainly. We’re a short drive up I-35 from our Leawood base.
Right-Sized Cooling for a Practical Home
Bigger isn’t better with air conditioning, and that’s especially true in Merriam’s modest homes. An oversized system cools quickly, shuts off, and never runs long enough to pull humidity out of the air — so the house ends up cool but clammy, and the equipment wears faster from short-cycling. We run an ACCA Manual J load calculation, select with Manual S, and check airflow with Manual D, sizing for the latent humidity load that defines real comfort in our mixed-humid Climate Zone 4A. Where an older Merriam home has limited or no ductwork, a ductless mini-split can be the practical, efficient answer, and we’ll say so.
What a Merriam Installation Includes
- Manual J load calculation specific to your home — right-sized, not oversized.
- Honest options — central air or ductless, explained for your home and budget.
- R-454B-compliant equipment meeting the current refrigerant standard.
- Old unit removed, refrigerant recovered per EPA 608.
- Permits pulled through the Johnson County building department, warranty registered.
- Verified startup — superheat, subcooling, and airflow checked and documented.
Frequently Asked Questions
- How do you size an AC for my Merriam home?
- With a Manual J load calculation, not the old unit’s size or a square-footage rule. Bigger isn’t better — an oversized AC short-cycles and won’t dehumidify, leaving even a modest home cool but clammy. Right-sizing lets the system run long enough to actually pull moisture out in our humid summers.
- Won’t a bigger AC cool my home better?
- No — that’s a common and costly myth. An oversized unit cools the air fast but shuts off before it removes humidity, so the house feels clammy, and the frequent on-off cycling wears the equipment out sooner. A correctly sized system runs steadily and keeps the home genuinely comfortable. We won’t sell you more capacity than your home needs.
- What if my older Merriam home has no good ductwork?
- Then a ductless mini-split is often the practical choice. It delivers efficient cooling (and heating) without the disruption and cost of running new ducts through an older home. For a home with decent ducts, central air is straightforward. We assess and recommend honestly based on your specific house.
- What refrigerant will my new Merriam AC use?
- R-454B, the lower-global-warming-potential refrigerant that replaced R-410A in new residential equipment as of the 2025 transition. Installing to the current standard keeps your equipment and parts supply supported for years.
- Do you remove my old unit?
- Yes. We recover the old refrigerant per EPA Section 608, haul away the equipment, and handle disposal as part of the installation, not as an add-on.
Contact 7th Degree Heating and Air
Serving Merriam and all of eastern Johnson County, including Leawood, Overland Park, Prairie Village, Mission, 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
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)