Licensed · Insured · Professional
475-265-7545
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HVAC Installation

High-efficiency central AC, heat pumps, and full system replacements — sized right for Fairfield County homes.

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Fast response · No obligation · Free estimates

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Licensed & Insured

Emergency Service Available

Upfront, Flat-Rate Pricing

4.9 Google Rated

Financing Available

HVAC

Why Homeowners Call APEX for HVAC Installation

A new HVAC system is a 15-to-20-year investment. Get the sizing wrong, skip the ductwork check, cheap out on the install, and you’ll feel it every month on your energy bill — and every summer afternoon.
APEX’s installation process starts with a Manual J load calculation, not a guess. We specify the right equipment, model the ductwork, pull permits, and commission the system so it delivers the efficiency the manufacturer promised.
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What's Included

HVAC Installation — Full Service Scope

Central Air Conditioning

High-SEER2 Carrier, Trane, Lennox & more.

Gas Furnaces

96%+ AFUE variable-speed installs.

Heat Pumps

Cold-climate heat pumps sized for CT winters.

Dual-Fuel Systems

Heat pump + backup furnace for best-of-both comfort.

Manual J Load Calcs

Engineering-grade sizing — no rules of thumb.

Ductwork Design

New runs, sealing, balancing, and replacement.

Smart Controls

Ecobee, Nest, Mitsubishi kumo cloud — pro-installed.

Rebates & Tax Credits

We file the 25C, Energize CT, and utility paperwork.

10-Year Parts Warranty

Manufacturer + APEX labor coverage.

Our Process

How the HVAC Installation Visit Works

01

Diagnose

Licensed tech arrives, identifies the root cause, and explains your options.

02

Quote

Flat-rate pricing in writing — you approve before any wrench turns.

03

Complete the Work

Parts on the truck, code-compliant install, cleaned up before we leave.

04

Stand Behind It

Parts & labor warranty, plus a courtesy follow-up to make sure all’s well.

Real Customers · Real Reviews

Fairfield County Trusts APEX

Rated 4.9/5 across Google, Yelp & Angi

“Our water heater died on a Sunday. APEX was at the door in under two hours, had a new unit installed the same afternoon, and the price matched the quote exactly. Zero surprises.”

Jennifer M.

Ridgefield, CT

“Replaced our old central AC with a Mitsubishi ductless system in our 1920s home. Clean install, respectful of the property, and our electric bill dropped 30% the first month.”

Mark & Dana P.

Westport, CT

“Commercial property manager here — APEX handles our whole portfolio now. Fast, licensed, and their invoicing is clean. Can’t recommend them enough.”

R. Velasquez

Stamford, CT

Frequently Asked

HVAC Installation FAQs

How do I know if I need a full replacement vs. a repair?

If your system is over 12 years old, uses R-22, needs a compressor, or has a cracked heat exchanger, replacement almost always wins on lifetime cost. We’ll give you an honest repair-vs-replace breakdown on-site.

A like-for-like central system swap is typically a 1–2 day job. Ductless and ductwork modifications can add 1–3 days. We set a firm completion date before we start.

Yes — every install includes the town permit, building inspection, and manufacturer registration. You do nothing but enjoy the comfort.

Heat pumps qualify for Energize CT rebates up to $15,000 plus the federal 25C 30% tax credit (up to $2,000). High-efficiency gas systems also qualify for utility rebates. We handle the paperwork.

Service Area

Proudly Serving Fairfield County, CT

From the Gold Coast to the foothills, APEX responds fast across every town in Fairfield County. If you don’t see your town listed, give us a call — if you’re nearby, we’re on the way.

Emergency Response

Need a Plumber or HVAC Tech Right Now?

Fairfield County’s trusted team — on call when you need us. Upfront pricing. No overtime fees.
475-265-7545