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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Most HVAC calls we get from Longwood aren’t simple equipment failures. They’re duct systems that have cooked in 130°F attics for forty years, short-cycling units that hit temperature but leave the house damp, and replacement quotes that ignore the real problem. Coldharbour Heating & Air handles AC repair, furnace repair, and AC installation across Longwood’s older Seminole County neighborhoods, with technicians who know to check the ductwork before selling a new unit. We’re independently owned and operated under the Kingswell network, and you can reach a live person at (817) 402-2972 any hour of the day.
Why Longwood Homes Are Different
Longwood’s housing stock was built during the 1970s and early 1980s suburban boom, and that era’s construction choices still drive what we find on service calls. Most homes are single-story, slab-foundation ranches or split-plans with attic-mounted horizontal air handlers and original flex ductwork. Many got one equipment replacement around 2000-2010 but kept the old ducts, which means we’re routinely working with insulation that’s lost its R-value and connections that have gone brittle at the boot collars.
In neighborhoods like Sabal Point and Wingfield North, we’ve found 20-30% of conditioned air dumping straight into the attic through disconnected or collapsed flex runs. The homeowner thinks they need a bigger AC. What they actually need is a duct-blaster test and targeted replacement before any equipment gets sized.
Longwood’s humid subtropical climate adds another layer. AC systems run ten-plus months a year here, and the June-September wet season pushes indoor relative humidity to 65-70% when a system is short-cycling or oversized. That moisture breeds mold odors in ductwork and produces callbacks that look like equipment failures but trace back to bad load calculations. We see this pattern enough in Longwood that our technicians run a full diagnostic, not just a pressure check, before quoting any repair.
Our Main Longwood Services
Longwood homeowners call us most often for cooling system work and winter heating repairs. Each service has its own dedicated page with detailed pricing and what to expect.
AC Repair in Longwood
AC repair in Longwood usually involves capacitor or contactor failures, refrigerant leaks, or blower motor issues in attic-mounted air handlers that have been baking through multiple Florida summers. Because these systems run so many months continuously, we also see a lot of clogged condensate drains and float-switch failures that shut the unit down as a safety measure. Our technicians carry common parts for Rheem, York, Daikin, Bryant, and other major brands, and most repairs finish same day. AC Repair in Longwood
Furnace Repair in Longwood
Furnace repair in Longwood means working on gas or electric heating elements that sit idle through long cooling seasons, then get called on for a few weeks in January and February. Igniter failures, limit switch trips from restricted airflow, and heat exchanger concerns are the usual suspects. We inspect the full system, not just the symptom, because a furnace that hasn’t run in months often reveals duct or venting issues once it fires. Furnace Repair in Longwood
AC Installation in Longwood
AC installation in Longwood demands more than swapping boxes. We start with a Manual J load calculation, then inspect the existing duct system for leakage and capacity. Installing a properly sized unit on failing ductwork wastes money and guarantees callbacks. We handle permitting, rebate paperwork, and schedule installation once equipment is ordered, not same-day. AC Installation in Longwood
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 Longwood
Our technicians are trained to service nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. We stock common capacitors, contactors, and blower motors locally, so most Longwood repairs don’t wait on parts. See our brands for full coverage details.
Pricing for HVAC Company in Longwood, FL
| Service | Typical range in Longwood |
|---|---|
| AC Repair | $150-$650 |
| Furnace Repair | $150-$700 |
| AC Installation | $3,500-$7,500 |
| Tune-Up | $80-$200 |
What pushes Longwood jobs toward the higher end: attic ductwork that needs replacement or repair before equipment will perform, refrigerant leaks requiring EPA-compliant recovery and recharge, and electrical upgrades for older systems. We give you a written price before any work begins, and that number doesn’t change when the technician is at your door.
Neighborhoods We Serve in Longwood
We run calls across Longwood’s full residential footprint, from the established subdivisions near Markham Woods Road to the Wingfield North area and everything between. Most locations see arrival within the scheduled window, with dispatch coordinated from our Miami office.
- Sabal Point
- Wingfield North
- Longwood Hills
- Woodlands
- Spring Valley
Service Area – Cities Near Longwood
Our crews work the full Seminole County corridor and adjacent communities. We regularly take calls from Lake Mary, FL to the north, Altamonte Springs, FL to the west, Casselberry, FL to the southwest, and Winter Springs, FL to the east. Each city has its own housing stock and climate patterns, and we adjust our diagnostics accordingly.
Serving Longwood, FL - Our Local Coverage Area
We’re based in the Longwood 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 Longwood
We answer calls live 24 hours a day, and most Longwood emergency calls get same-day dispatch. Extreme heat days can stretch scheduling, but you’ll get a firm arrival window and a call when the technician is en route. Call (817) 402-2972 to check current availability.
Some Longwood subdivisions, particularly in gated communities like Wingfield North, require advance notice for contractor vehicles or limit work hours. We handle the scheduling around those rules; just let us know your HOA’s requirements when you book.
We repair what makes sense to repair. Our technicians are not paid on commission, and we put the written price in your hand before any work starts. If replacement is genuinely the better value, we’ll explain why and show you the math, not pressure you. Call (817) 402-2972 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 Longwood Customers Say
"The repair was done well and quickly. Scheduling over the phone was a little clunky and I got transferred twice, but the tech himself was great and on time."
- Brett Haygood"Furnace was short cycling all winter. They diagnosed a bad sensor instead of condemning the whole unit like I feared. Cheap fix, honest call."
- Russ Tiedemann"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