HVAC in Houston - Same-Day Service, Priced Before We Start
Same-day heating and cooling service with the price agreed before we start, and no overtime surcharge for evenings or weekends. Licensed, insured, EPA-certified technicians.
We answer around the clock
The Smart Choice For HVAC
Same-Day Response
Fast dispatch across Houston. Most jobs handled the same day you call.
Licensed & Insured
Background-checked, certified technicians who meet every local requirement.
Upfront Pricing
Clear written estimates before any work begins - no hidden fees, ever.
Guaranteed Work
Every repair backed by our workmanship warranty and satisfaction guarantee.
What Our Customers Are Saying
"Honest to a fault. Two companies told me I needed a whole new unit. Coldharbour said mine had years left and just needed a cleaning and a part. Saved me thousands."
"New mini split for the addition. Clean install, on time two days running, and the price matched the written quote to the dollar."
"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."
"AC quit on the hottest day of the year of course. Coldharbour had a tech out that evening, found a bad capacitor, and had us cool again within the hour. Charged the quote, not a penny more."
"Our upstairs never cooled right. He found the duct run was half blocked and the system low on charge, fixed both, and now the whole house is even. Explained every step."
"Furnace was short cycling all winter. They diagnosed a bad sensor instead of condemning the whole unit like I feared. Cheap fix, honest call."
Areas We Proudly Serve
Serving Houston, TX - Our Local Coverage Area
We're based in the Houston area and know this community well. Use the map below to see our service coverage - if you're nearby, we can almost certainly help.
Request Your Free Estimate
Prefer to talk now? Call us directly - we answer fast and dispatch even faster. No obligation, no sales pitch.
Call or Text(832) 371-9862Request A Free Quote
HVAC Service Across the Houston Area
We Are the Houston Team for Coldharbour.
Coldharbour Heating & Air is the hvac company of the Kingswell family. Heating and cooling you can count on. Every job gets a written price before any work starts and is covered by The Kingswell Guarantee. Each location is independently owned and operated.
Same training, same parts, same pricing practice, and the same 365-Day Done Right Promise - delivered by people who live here.
Visit Coldharbour →Part of the Kingswell Family.
Kingswell is a family of home-service brands held to one written standard, and Coldharbour is the hvac company in it. One promise stands behind every trade, in every town.
Expert HVAC Repair and Installation Services
Every job on this list is handled by trained, background-checked technicians working to one national standard, priced upfront from a free estimate.
AC and Heating Repair
No cooling, no heat, ice on the line or a system that will not start. Diagnosed and repaired in one visit wherever parts allow.
Learn More →
Free HVAC Estimates
A technician measures the system, explains what failed, and quotes the repair or the replacement before anything is touched.
Learn More →
System Installation and Replacement
Right-sized furnaces, heat pumps and condensers installed with new line sets, a verified charge and a real airflow check.
Learn More →
Maintenance and Tune-Ups
Seasonal service that catches weak capacitors, dirty coils and low charge before they turn into a breakdown.
Learn More →Premium, Long-Lasting HVAC Parts
The part decides how long the repair lasts. Here is what we fit, and what the cheap version costs you later.
Run Capacitors
The run capacitor gives the compressor and the fan motor the push they need to start. It is the most common single reason an air conditioner hums but will not run.
We install capacitors rated for high ambient temperature at the correct microfarad value and voltage for the unit, so they hold capacitance through a full summer.
Budget replacements are marginal on both temperature rating and voltage. They drift out of spec within a season or two, and the compressor strains on every start until it fails.
Contactors
The contactor is the heavy switch that sends power to the outdoor unit every time the system calls for cooling. It moves thousands of times a season.
We fit contactors with fully shrouded silver-alloy contacts and a sealed coil, so the contact faces resist pitting and insects cannot bridge them.
Open-frame budget contactors leave the contacts exposed. They pit and eventually weld shut, ants nest in the frame, and the outdoor unit either will not start or will not shut off.
Air Filters
Filter choice is a balance. Too open and nothing gets caught, too restrictive for the blower and the whole system starves for air.
We match a pleated MERV 11 to MERV 13 filter to the blower static pressure and the return size, so you get real filtration without choking airflow.
The default is either a throwaway fiberglass panel that filters almost nothing, or an oversized high-restriction filter dropped in without checking static pressure at all.
Condenser Coils
The outdoor coil is where heat actually leaves your house. Its fin design and its protection from the weather set how hard the compressor has to work all summer.
We use coils with tight, straight fin spacing and a corrosion-resistant coating, protected by a proper guard so yard debris and string trimmers cannot flatten the fins.
Uncoated bare fins with no guard corrode in coastal and road-salt air and flatten on the first impact. A blocked coil drives head pressure up until the compressor gives out.
Thermostats
The thermostat is the brain of the system. A cheap one holds temperature by overshooting the setpoint in both directions.
We install programmable and smart thermostats with an accurate sensor and proper staging support, so the system runs longer, gentler, more efficient cycles.
Basic units run a wide temperature swing with no staging. The house overshoots, the equipment short cycles, and a good part of the run time is simply wasted.