Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
HVAC Company in Des Moines, WA
Most Des Moines homeowners pay between $150 and $700 for HVAC repairs and $3,500 to $7,500 for a new AC installation, with same-day service available for heating and cooling emergencies. Coldharbour Heating & Air dispatches technicians from our Seattle office to Des Moines daily, bringing the Kingswell Guarantee to homes shaped by salt air, mid-century construction, and some of the tightest building envelopes in King County. Call (817) 402-2972 any time, day or night, and a live person picks up.
Why Des Moines Homes Are Different
Des Moines sits on a marine terrace directly beneath Sea-Tac Airport’s primary flight corridors, and thousands of local homes have been retrofitted through the Port of Seattle’s Residential Sound Insulation Program. Those upgraded windows, doors, and added insulation dramatically tightened building envelopes originally designed for leaky 1950s through 1970s construction. We recalculate heat loads downward for these soundproofed homes and prioritize mechanical ventilation, HRV and ERV systems, in structures now far tighter than their original systems were sized for.
The bulk of Des Moines’s housing stock dates to that same mid-century suburban buildout, ranch-style and split-level homes, many originally heated by electric baseboard or oil furnaces with no duct systems at all. That makes ductless mini-split retrofits an outsized part of our local work compared to further-inland King County suburbs.
The June 2021 heat dome, which pushed regional temperatures above 100°F, triggered a concentrated wave of first-time cooling installations here in homes that had never needed it before. Equipment within a half-mile of the Des Moines Marina and waterfront bluff sees accelerated corrosion on outdoor condenser coils and copper refrigerant fittings from salt-laden marine air off Puget Sound. It’s a failure mode largely absent in inland Renton or Kent, but a routine service pattern for our technicians working the western neighborhoods.
Our Main Des Moines Services
Des Moines homeowners call us most often for cooling repairs in summer, heating repairs in winter, and new system installations year-round. Each service has its own dedicated Des Moines page with full details.
AC Repair in Des Moines
AC repair in Des Moines runs from compressor issues to refrigerant leaks corroded by salt air near the marina. We stock capacitors, contactors, and blower motors for quick turnaround on the most common failures, and our technicians are trained on nine major residential brands. If your AC quits during a rare hot stretch, we’ll get a technician out fast with a written price before any work begins. AC Repair in Des Moines

Furnace Repair in Des Moines
Furnace repair in Des Moines covers everything from failed igniters on modern gas systems to heat exchanger cracks in aging units. Many older homes still run original electric baseboard heat, so we also troubleshoot hybrid setups and advise when a heat pump conversion makes sense. Every repair comes with our written 365-Day Done Right Promise. Furnace Repair in Des Moines

AC Installation in Des Moines
AC installation in Des Moines often means sizing for a newly tightened building envelope or adding first-time cooling to a home that never had ductwork. We perform load calculations that account for sound insulation retrofits and specify equipment with marine-grade coatings for corrosion resistance near the waterfront. Install dates are scheduled, not same-day, with a fixed written price and rebate paperwork handled. AC Installation in Des Moines

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Des Moines
Our technicians carry training and common parts for Rheem, York, Daikin, Bryant, and five other major residential HVAC brands. We stock capacitors, contactors, igniters, and blower motors locally, so most Des Moines repairs don’t wait on a parts run. our brands
Pricing for HVAC Company in Des Moines, WA
| Service | Typical range in Des Moines |
|---|---|
| AC Repair | $150-$650 |
| Furnace Repair | $150-$700 |
| AC Installation | $3,500-$7,500 |
| Tune-Up | $80-$200 |
Prices in Des Moines run higher when salt corrosion has damaged multiple components, or when sound insulation retrofits require recalculated load specs and modified ductwork. We hand you a written price before any work begins, and that number does not change at the door. That’s The Kingswell Way, not a case-by-case policy.
Neighborhoods We Serve in Des Moines
Our technicians work throughout Des Moines, from the waterfront bluff to the eastern ridge. Most calls reach a technician within the same day.
- Marina District
- Redondo
- Midway
- Woodmont Beach
- North Hill
Service Area – Cities Near Des Moines
We dispatch from our Seattle office to Des Moines and surrounding communities daily. Our service area includes Seattle, WA, Tacoma, WA, Spokane, WA, and Vancouver, WA, with scheduling coordinated for prompt arrival windows across the region.
Serving Des Moines, WA - Our Local Coverage Area
We’re based in the Des Moines area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in Des Moines
Most Des Moines calls receive same-day service, and our phones are answered by a live person 24 hours a day. Emergency heating or cooling failures during extreme weather are prioritized. Call (817) 402-2972 to check today’s availability.
Yes. Homes upgraded through the Port of Seattle’s program have much tighter envelopes than original construction, so we recalculate heat loads downward and often recommend mechanical ventilation. Skipping this step leads to oversized, inefficient equipment.
Condenser coils and copper fittings within a half-mile of Puget Sound corrode faster than inland equipment. We specify marine-grade coatings when possible and inspect for salt damage during every service call. Regular maintenance catches corrosion before it causes failure.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Des Moines Customers Say
"Thermostat and a weak blower. Fixed both in one visit, explained the guarantee, and didn't leave a mess. I've already recommended them to my neighbor."
- Natalie Esposito"Honest to a fault. Two companies told me I needed a whole new unit. Coldharbour said mine had years left and just needed a cleaning and a part. Saved me thousands."
- Marcus Reilly"Furnace wouldn't light the first cold morning. The guy walked me through what he was checking so I actually understood it. Replaced the igniter, wrote up the warranty, and it's been warm since."
- Alicia Romero







Before
After
Before
After
Before
After