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 Long Hill, CT
Dalton Heating & Air is the HVAC company Long Hill homeowners call when they want a written price before any work starts and a full-year guarantee after it’s done. We handle AC repair, furnace repair, and heat pump installation across Long Hill, CT – and every job is run on The Garrison Standard: arrive inside the stated window, price in writing first, do the work by the book, leave the site clean, and stand behind the repair for 365 days. If you need a real person to answer the phone right now, call (361) 306-9515 – we answer live, 24/7.
Long Hill’s older housing stock and tight lot lines make HVAC work here different from the newer subdivisions across Fairfield County. We’ll get into that below.
Why Long Hill Homes Are Different
Long Hill sits between Trumbull and the Merritt Parkway corridor, and the homes reflect several decades of building: 1950s capes and ranches, 1960s split-levels, and a fair number of 1980s colonials with additions. What that means for heating and cooling work is pretty direct. Many of the original duct systems were sized for oil-fired furnaces, not modern high-efficiency heat pumps or AC condensers. When we replace a system in Long Hill, we see undersized return ducts more often than not, and that changes the load calculation and the equipment choice. A heat pump that would work fine in a newer build may struggle in a Long Hill cape with original ducts and no wall insulation.
The terrain matters too. Long Hill’s lots are often sloped, with condensing units tucked beside foundation walls or under deck overhangs. That affects airflow, drainage, and access for service. We route line sets and electrical differently when a unit sits against a hill than when it’s in an open side yard. Snow and leaf debris also collect faster against those tucked-in units, so we check drainage more carefully on spring maintenance calls here than we would on a flat, open lot.
Permitting in Long Hill goes through Trumbull’s building department, and the inspectors care about equipment clearances, electrical disconnects, and condensate drainage. Our crews pull permits when the job requires them and schedule the inspection as part of the install. No homeowner should have to chase that paperwork themselves.
Our Main Long Hill Services
Most calls we get in Long Hill fall into three buckets: an AC system that quit in July, a furnace that won’t fire in January, or a homeowner planning to replace an aging system with a heat pump. Here’s what each one looks like in this town.
AC Repair in Long Hill
Long Hill’s tree cover is beautiful, but it drops a lot of debris onto condensing units. Cottonwood, maple seeds, and pine needles clog coils and reduce airflow, which makes the compressor work harder and shortens its life. We also see a lot of capacitor failures and contactor wear on older Rheem and Goodman units in this area, simply from run-time. If your system is blowing warm air or short-cycling, our techs diagnose it with gauges and meters, put the repair price in writing, and usually have the part on the truck. Read more about what’s involved here: AC Repair in Long Hill.

Heat Pump Installation in Long Hill
More Long Hill homeowners are looking at heat pumps as oil prices climb and rebates through Eversource and the state become more predictable. The complication here is the existing ductwork. A heat pump moves air differently than an oil furnace, so the duct sizing and return-air path have to be checked before we quote. We also handle cold-climate units that hold their capacity down into the teens, which matters for Long Hill winters. Marco Benitez reviews every heat pump proposal personally before it goes to the homeowner. The full process is on this page: Heat Pump Installation in Long Hill.

Furnace Repair in Long Hill
A furnace that locks out on a cold January night in Long Hill is not a scheduling inconvenience – it’s a real problem when temperatures drop into the teens. We get a lot of calls for failed igniters, dirty flame sensors, and tripped limit switches on Trane and Lennox furnaces in this area. The fix is often quick: clean the sensor, replace the igniter, confirm the gas pressure. But we also check the heat exchanger on every furnace call, because a cracked exchanger is a carbon monoxide risk and it’s the one repair you don’t put off. Details and pricing are here: Furnace Repair in Long Hill.

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 Long Hill
Our techs are factory-trained on nine major residential HVAC brands, including Trane, Lennox, Goodman, and Rheem. We stock common capacitors, contactors, igniters, flame sensors, and pressure switches on the trucks, so most Long Hill repair calls are one visit. For anything unusual, our Hartford parts network gets it to us within a day. See the full brand list on our brands page.
Pricing for HVAC Company in Long Hill, CT
These are the price ranges you’ll see from us in Long Hill. They aren’t bait numbers – they’re the real spread based on part cost and labor, and the price goes in writing before we start.
| Service | Typical range in Long Hill |
|---|---|
| AC repair (minor: capacitor, contactor, fan motor) | $150 – $450 |
| AC repair (major: compressor, coil, control board) | $450 – $650 |
| Furnace repair (minor: igniter, flame sensor, limit switch) | $150 – $400 |
| Furnace repair (major: gas valve, blower motor, control board) | $400 – $700 |
| AC installation (full system, standard efficiency) | $3,500 – $5,500 |
| AC installation (full system, high efficiency) | $5,500 – $7,500 |
| Seasonal tune-up (AC or furnace) | $80 – $200 |
What pushes a Long Hill job toward the top of these ranges is access: a unit crammed against a slope, a crawlspace that’s tight, or ductwork that needs modification to match the new equipment. What doesn’t change is the price once we’ve written it. The quote is the quote.
Neighborhoods We Serve in Long Hill
We run calls across all of Long Hill, from the streets off Main Street up toward the Trumbull line and back through the residential roads south of the Merritt. Our typical response time for a Long Hill call is same-day for AC or furnace failures, and we schedule heat pump installations within one to two weeks depending on equipment availability.
- Long Hill center and Main Street corridor
- Streets off Booth Hill Road
- Reservoir Avenue area
- Neighborhoods along the Pequonnock River valley
- Subdivisions off Daniels Farm Road
Service Area – Cities Near Long Hill
Dalton Heating & Air serves Long Hill and the surrounding region. If you’re in a neighboring community, we also cover Bridgeport, PA, Stamford, CT, New Haven, CT, and Hartford, CT. Dispatch and scheduling are coordinated from our Hartford office, but the crews running Long Hill calls live and work locally.
Serving Long Hill, CT - Our Local Coverage Area
We’re based in the Long Hill 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 Long Hill
Same-day in most cases. We answer the phone live 24/7, and the dispatcher will give you a straight arrival window on the call. If a Long Hill address is on the schedule, a uniformed technician shows up inside that window with the parts stocked for that job.
Most furnace replacements, heat pump installs, and some AC replacements require a permit through Trumbull’s building department. Dalton pulls the permit, schedules the inspection, and handles the paperwork. We don’t ask homeowners to chase permits or meet inspectors.
Yes. We repair AC condensers, furnaces, and heat pumps, and we also quote full replacements and new installations. Every service call gets a written diagnosis and a written price before any work, and every repair is guaranteed in writing for a full year. If it fails in that window, we return at no charge.
Need a real answer about your specific system? Call (361) 306-9515 and you’ll get a person, not a queue. Estimates are free.
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 Long Hill Customers Say
"Changed the filter size and added a better filter rack. Simple and useful advice."
- Rhonda C."Honest, direct people. Told me what the furnace needed and nothing more, and the bill matched."
- Eliza S."Coil cleaning and a refrigerant check before summer. AC has never been this cold."
- Marty D.







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