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.
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After
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Before
AfterHVAC Company in Mercer Island, WA
Mercer Island sits in Lake Washington between Seattle and Bellevue, and the water changes everything about how heating and cooling systems perform here. Homes deal with lake-effect humidity in summer and cold, damp air moving off the water in winter, which puts real strain on compressors, heat exchangers, and ductwork. Dalton Heating & Air handles that reality with written pricing before any work starts, a full-year written guarantee on every repair, and crews who show up inside the stated window. If your system is acting up, call (361) 306-9515 and a live person answers, day or night.
Why Mercer Island Homes Are Different
Mercer Island’s housing stock runs from 1950s ramblers near the north end to newer custom builds up the hillsides, and many of the older homes still have the original duct layout. That matters because a duct system sized for a 1960s furnace is often undersized for a modern heat pump, and we see this regularly in neighborhoods like West Mercer and the streets off Island Crest Way. The island’s topography also creates microclimates: homes on the east side get more afternoon sun, while shaded lots near Pioneer Park stay cooler and damper. Moisture near the lake drives more coil corrosion and more condensate drain clogs than inland homeowners ever deal with.
Permit reality matters here too. The City of Mercer Island requires mechanical permits for furnace and AC replacements, and we handle the paperwork as part of the job. HOA requirements in communities like the ones around Mercerwood and Shorewood can also dictate condenser placement, noise limits, and even exterior line-set routing. We have worked through enough of these to know which questions to ask before the first part gets ordered.
Our Main Mercer Island Services
The three calls we get most often from Mercer Island homeowners: an air conditioner that quits during the first hot stretch, a furnace that will not fire on a cold wet morning, and heat pump replacement projects on the island’s aging electric-heat homes.
AC Repair in Mercer Island
Lake humidity means Mercer Island AC systems run hard in July and August, and when a compressor or capacitor fails, it rarely happens on a cool day. AC Repair in Mercer Island covers the most common failures we see: refrigerant leaks from corroded coils, failed dual-run capacitors, and plugged condensate lines from the damp air. Our techs carry the common parts for Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard, so most repairs finish the same day we arrive. The price is in writing before any work starts.
Heat Pump Installation in Mercer Island
Many Mercer Island homes originally built with electric baseboard or an old electric furnace are prime candidates for a cold-climate heat pump, and the island’s mild-but-damp winters suit these systems well. Heat Pump Installation in Mercer Island explains what a properly sized system costs, why a load calculation matters more here than on the mainland, and which rebates apply. This is scheduled work: we provide a written fixed price, set an install date, and handle the permit and rebate paperwork. No surprises on install day.
Furnace Repair in Mercer Island
When a furnace quits on a 40-degree rainy night in January, the problem is usually a failed igniter, a dirty flame sensor, or a pressure switch that no longer reads the vent properly. Furnace Repair in Mercer Island walks through those common failures and what they cost to fix. Every repair we do includes a written guarantee for a full year, and if the repair does not hold in that time, we return at no charge. That is the Garrison Standard, and it is not an upgrade or an add-on.
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 Mercer Island
We service Goodman, Rheem, York, and Daikin systems, plus five other major brands. Our trucks carry common replacement parts for these units, which means fewer return trips and faster repairs. See our brands for the full list of factory-trained coverage.
Pricing for HVAC Company in Mercer Island, WA
| Service | Typical range in Mercer Island |
|---|---|
| AC repair | $150 – $650 |
| Furnace repair | $150 – $700 |
| AC installation | $3,500 – $7,500 |
| Tune-up | $80 – $200 |
Mercer Island pricing runs toward the upper end when the home requires a crane for rooftop condenser placement, or when permits and HOA review add steps. The number we put in writing covers the work, the parts, and the labor for that visit, with no door-knock renegotiation. That is a Garrison Code rule, not a courtesy.
Neighborhoods We Serve in Mercer Island
We work across the entire island, from the north-end streets to the south tip. Typical response time for a repair call on Mercer Island is inside two hours during normal business days, and emergency calls are dispatched around the clock.
- West Mercer
- Mercerwood
- Shorewood
- East Seattle
- Town Center
Service Area – Cities Near Mercer Island
Dalton Heating & Air also serves nearby communities around Lake Washington. Homeowners in Seattle, WA, Bellevue, WA, Medina, WA, and Renton, WA get the same written pricing, same live-answer phone line, and same full-year repair guarantee. Dispatch and scheduling are coordinated from the Seattle metro office; crews serve Mercer Island locally.
Serving Mercer Island, WA - Our Local Coverage Area
We’re based in the Mercer Island 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 Mercer Island
Yes. The City of Mercer Island requires mechanical permits for furnace and AC installations, and many HOA communities add their own approval layer. We pull the permit, schedule the inspection, and keep the job moving while the paperwork processes.
Most repair calls on Mercer Island get a technician on site within two hours during the day, and the phone line is answered by a live person 24/7 for after-hours heating or cooling failures. Call (361) 306-9515 and you will talk to a person, not a voicemail tree.
We cover the entire island, from the north end near I-90 to the southern slopes, and we also serve Bellevue, Seattle, Medina, and Renton. If you are on Mercer Island, you are in our service area, plain and simple.
If your heating or cooling system is not doing its job on Mercer Island, call Dalton Heating & Air at (361) 306-9515. We put the price in writing before any work starts, show up inside the window, and stand behind every repair for a full year. A real person answers the phone, day or night.
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 Mercer Island Customers Say
"Coil cleaning and a refrigerant check before summer. AC has never been this cold."
- Marty D."Good communication, tidy, and disciplined work. Taped off the floor and wiped the unit down."
- Karen J."Installed a heat pump to replace an old oil furnace. Three clear quotes and the install crew was tidy."
- Cheryl B.