Refrigerant Recharge in Leawood, KS
Here’s the thing most homeowners are never told: refrigerant doesn’t get used up. A sealed air conditioning system should never need “more” refrigerant. So if your system is low, there’s a leak — and simply topping it off sends you right back to a warm house in a few weeks while venting refrigerant into the atmosphere. 7th Degree Heating and Air finds and seals the leak first, then recharges to the manufacturer’s exact specification.
Find the Leak, Then Recharge
When we get a low-charge call, we don’t just connect gauges and add refrigerant. We confirm the charge is actually low using superheat and subcooling readings, then locate the leak — electronic detectors, UV dye, or a nitrogen pressure test, depending on the system. Common leak points include the evaporator coil, the line set fittings, the Schrader valves, and the condenser coil. Once it’s sealed and verified, we recharge to spec — by weight on a system we’ve evacuated, or dialed in by subcooling — so the system runs at the efficiency and dehumidification capacity it was designed for. A correct charge matters double in our humid climate, because a system even slightly low loses moisture-removal capacity first.
What Refrigerant Does Your System Use?
- R-410A — the standard in most systems installed over the last 15 years or so. Still serviceable, though being phased down.
- R-454B — the current lower-global-warming-potential refrigerant in new equipment as of the 2025 transition.
- R-22 — found in older systems, now phased out and expensive. A significant R-22 leak is often a strong signal it’s time to plan a replacement.
All refrigerant handling is done under EPA Section 608 certification, including recovery and proper documentation. Venting refrigerant is both illegal and environmentally harmful, which is another reason “just top it off” isn’t how we work.
Frequently Asked Questions
- How often should my AC need a refrigerant recharge?
- Ideally never. A properly sealed system holds its charge for its entire life. If yours is low, refrigerant has escaped through a leak — so the real fix is finding and sealing that leak, not adding refrigerant on a schedule. Anyone recharging your system every year without finding the leak is treating the symptom.
- What are the signs my system is low on refrigerant?
- Weak or warm airflow, longer run times that never quite cool the house, ice forming on the refrigerant line or evaporator coil, higher energy bills, and sometimes a hissing or bubbling sound near the lines. In our humid climate, you may also notice the house feels damp even when the temperature drops, because low charge kills dehumidification first.
- Do you find the leak or just top it off?
- We find and seal it. Topping off a leaking system is a temporary fix that wastes money, vents refrigerant illegally, and leaves you calling again within weeks. We locate the leak with electronic detection, dye, or a pressure test, repair it, then recharge to spec.
- What refrigerant does my air conditioner use?
- Most systems from the last 15 years use R-410A; new equipment now uses R-454B after the 2025 transition; and older units may still use phased-out R-22. We identify yours and handle it correctly — and if it’s an R-22 system with a significant leak, we’ll be honest that replacement may be the smarter spend.
- Is it okay to just add refrigerant without fixing the leak?
- No, for several reasons. It’s a short-term patch that leaves you cooling poorly again soon, it wastes money on refrigerant that escapes, and intentionally venting refrigerant violates EPA regulations. The responsible and cost-effective path is to seal the leak and recharge once, correctly.
Contact 7th Degree Heating and Air
Serving Leawood, Overland Park, Prairie Village, Mission, Merriam, and Lenexa with leak detection, correct recharges, and 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)