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 Cos Cob, CT
Dalton Heating & Air handles heating and cooling work across Cos Cob, CT, from split-system AC repairs in older colonials to full heat pump installations in newer builds near the Mianus River. Cos Cob’s housing stock runs the gamut: 1920s saltboxes, mid-century ranches on tight lots, and recent construction north of the Post Road. That mix means no two jobs look the same, and the pricing stays in writing before any work begins. If your system is down, call (361) 306-9515 and you’ll get a live person, not a voicemail queue.
Why Cos Cob Homes Are Different
Cos Cob sits low along the Mianus River and its tidal flats, which means humidity is a constant presence in basements and crawl spaces. We regularly find condensate lines clogged faster here than in drier towns further inland, and rust on older furnace cabinets where damp air collects. Homes off Valleywood Road and Indian Field Road tend to sit on smaller lots, which can make outdoor condenser placement tight; we plan around property lines and neighbor clearances rather than assuming a standard pad works.
Much of Cos Cob’s older stock predates central air, so when homeowners add cooling or switch to a heat pump, the ductwork often needs rework or the home needs a ductless design. The town also sits within Greenwich’s permitting system, so some mechanical work requires a permit pulled before we start. We handle the paperwork on our scope and flag any HOA rules that affect outdoor unit placement, particularly in the neighborhoods along Sound Beach and the Cos Cob waterfront.
Our Main Cos Cob Services
Most Cos Cob calls come down to two things: a cooling system that has quit in the middle of a humid stretch, or a heating system that will not start in January. Here is how each one works when we are on site.
AC Repair in Cos Cob
When an air conditioner stops holding temperature in Cos Cob, the usual culprits are refrigerant leaks, failed capacitors, or condensate backups from the humidity near the Mianus River. Our technicians diagnose the system, put the fix in writing, and complete the repair with parts stocked on the truck. Every AC repair carries a written guarantee, and if the same fault returns within the year, we come back at no charge. AC Repair in Cos Cob covers the full breakdown of what we check and what repairs cost.

Heat Pump Installation in Cos Cob
Heat pumps are a strong fit for Cos Cob homes because they handle both cooling and shoulder-season heating, and the town’s humid summers put less strain on them than on older split AC setups. We size each system to the home’s actual load, not a rule of thumb, and we factor in whether ductwork exists or if a ducted or ductless layout makes more sense. Heat Pump Installation in Cos Cob explains the options, what a typical install runs, and how rebate paperwork is handled.

Furnace Repair in Cos Cob
Older Cos Cob homes often still run gas furnaces in basements that flood or hold moisture after heavy rain, and that dampness shortens the life of ignitors, flame sensors, and control boards. When a furnace will not fire, we check the sequence of operation, identify the failed component, and quote the repair in writing before touching anything. Furnace Repair in Cos Cob lists the most common failures in this area and the price range for each.

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 Cos Cob
Our technicians are factory-trained on nine major residential brands, including Rheem, York, Daikin, and Bryant. We keep common boards, capacitors, ignitors, and motors stocked locally so most Cos Cob repairs finish in one visit. See our brands for the full list.
Pricing for HVAC Company in Cos Cob, CT
| Service | Typical range in Cos Cob |
|---|---|
| AC repair | $150 – $650 |
| Furnace repair | $150 – $700 |
| AC installation | $3,500 – $7,500 |
| Tune-up | $80 – $200 |
What pushes a Cos Cob repair toward the top of the range is usually access: tight basements, older electrical panels, or condenser units wedged against a fence or retaining wall. Whatever the job, the price is in writing before we start, and it does not change at the door.
Neighborhoods We Serve in Cos Cob
We work throughout Cos Cob, and our typical response window is same-day or next-day depending on the season and time of call. In July and January, demand is highest, so early calls get the quickest slots.
- Cos Cob Center
- Cos Cob Landing
- Mianus River area
- North Cos Cob
- Sound Beach
Service Area – Cities Near Cos Cob
Dalton Heating & Air also serves homeowners in nearby communities, including Riverside, MD, Old Greenwich, CT, Greenwich, CT, and Stamford, CT. If you’re just outside Cos Cob, call and we’ll confirm whether we have a crew in your area that day.
Serving Cos Cob, CT - Our Local Coverage Area
We’re based in the Cos Cob 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 Cos Cob
We answer the phone live, 24/7, and most Cos Cob calls get a same-day or next-day appointment. During peak weeks in July and January, early-morning calls get the earliest slots, and emergency no-heat or no-cooling calls are prioritized.
Some mechanical changes in Cos Cob require a permit through the Town of Greenwich. We pull what is required on our scope of work and handle the paperwork. If HOA rules affect where an outdoor unit can sit, we flag that before installation day.
Every repair is guaranteed in writing for a full year. If the same fault returns in that time, we come back at no charge. There is no upgrade to buy and no thirty-day window to call within. It is part of The Garrison Standard on every job.
If your system is down or you want a straight answer on what a repair or replacement will cost in Cos Cob, call Dalton Heating & Air at (361) 306-9515 for a free estimate.
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 Cos Cob Customers Say
"Installed a heat pump to replace an old oil furnace. Three clear quotes and the install crew was tidy."
- Cheryl B."Tech arrived in uniform right on time. AC wasn't cooling, found a failed capacitor, and replaced it in twenty minutes. The owner is a veteran and the company runs like it."
- Frank O."Blower motor died on the coldest night. They had the part on the truck and had us warm again the same day."
- Sandy G.







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