About 7th Degree Heating and Air
When a furnace quits at 2 a.m. in January, nobody wants a lecture on jargon. They want their family warm again — and they want to trust that the person they just let in the door is telling them the truth. That second part is harder to find than it should be, and it’s the reason 7th Degree Heating and Air exists.
We’re a family-owned and veteran-owned HVAC contractor based in Leawood, Kansas, serving homes and businesses across Johnson County. The company is led by owner Parker Lacasse, and it runs on a principle that decides how every service call goes: diagnose before you quote, and measure before you recommend. A capacitor reading 7 microfarads on a 35-microfarad rated part and a stuck contactor can produce the identical symptom — a condenser that won’t start — but they are not the same repair, and they are not the same price. We quote what the meter shows, not what the worst case would bill.
The Owner — Parker Lacasse
Parker Lacasse has worked in residential and light-commercial HVAC across the Kansas City metro for more than a decade, and founded 7th Degree Heating and Air in 2015 to bring measurement-first diagnostics and straight pricing to Johnson County homeowners. As a family-owned and veteran-owned company, 7th Degree reflects the values Parker built it on: discipline, honest answers, and work that holds up over time.
Because Kansas does not issue a statewide HVAC license, qualified mechanical work in this market is licensed at the county and city level. 7th Degree carries the credentials required to pull permits and perform mechanical work across Johnson County:
- Johnson County Class “DM” Mechanical Contractor License: DM-24-11873
- EPA Section 608 Universal Certification (refrigerant handling for R-410A, R-454B, and legacy R-22): EPA-608-U-457921
The discipline shows up in the work. Static pressure measured across the air handler. Superheat and subcooling verified on every cooling repair. Combustion analysis on gas furnaces, with carbon monoxide checked air-free against manufacturer spec. The data identifies the failure. Only then do we write the quote.
Why Leawood and Johnson County Break Generic HVAC
Equipment sized and tuned for Phoenix, Denver, or Dallas will underperform here for reasons that are physics, not opinion. The Kansas City metro sits in a specific, demanding climate, and the right system has to be selected for it.
Climate Zone 4A — Humid Summers, Cold Snaps, Big Swings
Johnson County falls in IECC Climate Zone 4A (Mixed–Humid). The regional ACCA Manual J design basis runs roughly a 13°F winter (99%) design low and a 91°F summer (1%) design high — but the headline number isn’t the dry-bulb temperature, it’s the humidity that rides with it. A mixed-humid summer means a large latent cooling load: a meaningful share of the work your AC does is removing moisture, not just lowering temperature. An air conditioner sized by rule-of-thumb tonnage will often be oversized, short-cycle, satisfy the thermostat before it ever pulls the humidity down, and leave the house cold and clammy. Right-sizing for the latent load is the difference between comfortable and merely cool. And because the metro swings from sub-zero January cold snaps to triple-digit August afternoons, the same home needs balanced heating and cooling capacity — neither side can be an afterthought.
Hard Water from WaterOne
Most of Johnson County — including Leawood — is served by WaterOne, which treats and partially softens its supply using a lime and soda-ash process. Even after treatment, finished water across the Kansas City metro typically lands in the moderately-hard to hard range, commonly cited around 5–8 grains per gallon. That mineral content matters for HVAC: it scales whole-home humidifier pads and steam canisters faster than their rated service interval, and it builds biofilm-bound deposits in evaporator condensate drains, which is a leading cause of the summer water leak homeowners find at the air handler. Equipment and maintenance intervals chosen without accounting for local water chemistry fail on a schedule the warranty doesn’t cover.
Right-Sized, Not Rule-of-Thumb
New-system quotes start with an ACCA Manual J load calculation, then Manual S equipment selection, then Manual D duct verification when the existing ductwork is staying. A 1960s ranch in north Leawood with original single-pane windows carries a very different design load than a 2015 build in south Leawood framed to the IECC 2021 envelope (R-20 walls, R-49 ceiling, U-0.32 windows). Tonnage by rule of thumb usually gets one of those wrong — and in a humid climate, oversizing is the more common and more uncomfortable error.
What We Do
Residential and light-commercial HVAC for properties across Johnson County:
- Cooling — AC installation, repair, and tune-ups; capacitor and compressor work; refrigerant service; evaporator coil repair. R-454B-compliant equipment selection for the current refrigerant transition.
- Heating — furnace installation, repair, and tune-ups; heat pumps; heat exchanger and boiler service; gas line work.
- Indoor Air Quality — duct cleaning, humidifiers and dehumidifiers, air purifiers, UV-C coil treatment, filter upgrades, and carbon monoxide testing.
- Maintenance — seasonal tune-ups, full-system inspections, and custom maintenance plans built around local water and humidity conditions.
- Installation & Upgrades — full system replacement, ductless mini-splits, zoned systems, and smart thermostats.
- Commercial — rooftop units, light-commercial HVAC, and service contracts.
Our Service Area
Our office at 12720 Catalina St sits in the heart of Leawood, putting us minutes from the neighborhoods and corridors we serve across eastern Johnson County:
- Leawood — from the older north-of-I-435 homes to the newer south-Leawood builds along the 135th and 151st Street corridors.
- Overland Park — residential and light-commercial across the city’s wide range of housing eras.
- Prairie Village — the established mid-century housing stock that often needs thoughtful retrofit work.
- Mission, Merriam, and Lenexa — full residential service plus commercial along the Johnson County corridors.
How We Work
Diagnose. Don’t Guess.
Every repair starts with measurement, not a sales pitch. We don’t condemn a heat exchanger we haven’t inspected with a borescope, and we don’t quote a compressor when the meter points to a $40 capacitor.
Permitted and Priced in Daylight.
We pull mechanical permits through the Johnson County building department on installations and major repairs — not as a courtesy, but because unpermitted HVAC can void homeowner insurance and create disclosure problems at sale. Every estimate breaks out equipment, labor, permit fees, and any venting or electrical modifications. No package pricing that hides margin, and no same-day pressure. If your fourteen-year-old furnace passes a combustion test with no cracks in the heat exchanger, you’ll hear that — and you’ll get a clean report and a maintenance plan, not a sales pitch for a system you don’t need yet. We are licensed and insured, and we treat your home like it’s ours.
Frequently Asked Questions
- Who owns 7th Degree Heating and Air?
- 7th Degree Heating and Air is owned and led by Parker Lacasse. It is a family-owned and veteran-owned company based at 12720 Catalina St in Leawood, Kansas, serving residential and light-commercial customers across Johnson County since 2015.
- Is the company licensed and insured to do HVAC work in Kansas?
- Yes. Kansas does not issue a statewide HVAC license — mechanical contractors are licensed at the county and city level — so 7th Degree holds a Johnson County Class “DM” Mechanical Contractor License and carries EPA Section 608 Universal certification for refrigerant handling. The company is licensed and insured, and permits are pulled through the county building department on every installation.
- Why does HVAC equipment perform differently in Johnson County than elsewhere?
- Johnson County is in IECC Climate Zone 4A (Mixed–Humid), with a regional design range of roughly 13°F in winter to 91°F in summer. The defining factor is summer humidity: a large latent cooling load means a properly sized system has to dehumidify, not just cool, and oversized equipment short-cycles and leaves homes cold and clammy. Local WaterOne hard water of roughly 5–8 grains per gallon also scales humidifier components and condensate drains faster than manufacturer-rated intervals.
- What cities does 7th Degree Heating and Air serve?
- Leawood, Overland Park, Prairie Village, Mission, Merriam, and Lenexa. Our Leawood office on Catalina Street keeps response times short across eastern Johnson County for both scheduled work and emergency calls.
- What equipment brands do you install and service?
- 7th Degree services all major HVAC brands. New-install brand selection is driven by the Manual J load calculation, compliance with the 2025 R-454B refrigerant transition, and your budget — not by dealer incentives.
Contact 7th Degree Heating and Air
Our Leawood office is centrally located in eastern Johnson County, with 24/7 emergency response across Leawood, Overland Park, Prairie Village, Mission, Merriam, and Lenexa. Whether you’re facing a no-heat call during a January cold snap, a failing AC on a 95°F July afternoon, or planning a right-sized Climate Zone 4A system replacement, our team is ready to help.
- 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)