Called at 4:40 on a Friday and got a text back before I'd put the phone down. Tech was here Saturday morning. Bad capacitor, fixed in 40 minutes, price was exactly what he quoted.
Residential AC & heating · Greater Houston
The AC quit at 96°. Here's what happens next.
Call or text Demo Heating & Air. A person answers during business hours. If we miss you, a text comes back within a minute. A licensed tech shows up in the window we gave you, finds the problem, and tells you the price before touching anything.
What we fix
Four things, done properly.
We only work on homes, and only on heating and cooling. No plumbing add-ons, no generator upsell. Pick what's going on and we'll take it from there.
AC repair
Warm air, ice on the copper lines, water by the air handler, a breaker that keeps tripping.
02AC replacement
Sized with a load calculation for your house, not copied from the old unit's label.
03Furnace & heat pump
No heat on the first cold night, a burning smell, short cycling, a heat pump stuck in defrost.
04Comfort Club
Two tune-ups a year, spring for cooling and fall for heating, plus priority scheduling in July.
After you reach out
No voicemail. No guessing when we'll show up.
This is the same order of events every time, whether you call at 9am or text at 11pm.
You call or text
During Mon-Fri 7am-6pm, a person picks up. After hours, your message goes straight to the on-call list.
If we miss you, we text
From our business number: "Sorry we missed you. Is this a repair, a replacement or maintenance?" Reply and it lands with the person scheduling.
A time window, confirmed
You get a 2-hour arrival window by text, and a heads-up when the tech is on the way.
Diagnosis, then the price
The tech shows you what failed and gives a written price. Nothing gets replaced until you say yes.
Repair or replace
We'll tell you when a repair isn't worth it. And when it is.
Most systems we see should be repaired. A few shouldn't. This is the rule our techs use before they ever mention a new unit.
The $5,000 rule
A 6-year-old system with a $450 repair: 2,700. Repair it. A 14-year-old system with a $1,200 compressor job: 16,800. Get a replacement quote before you spend the money.
- Uses R-22 refrigerantProduction ended in 2020. Recharging an R-22 leak now costs more than it's worth.
- Compressor failed on a 12+ year systemThe repair often costs half a new system, with none of the warranty.
- Below today's minimum efficiencyNew split ACs sold in Texas since 2023 must hit 14.3 SEER2. Older 10 SEER units use about 40% more power.
Maintenance plan
Comfort Club
Two tune-ups a year and a spot at the front of the line when the July heat breaks everyone's AC at once.
- Spring cooling tune-upCoil rinse, drain line flush, capacitor and refrigerant readings.
- Fall heating tune-upBurner, flame sensor, heat exchanger and carbon monoxide check.
- Priority schedulingMembers get the next open window, ahead of new calls.
- 15% off repairsOn parts and labor, for every system on the plan.
Reviews
What neighbors say after the tech leaves.
Every finished job gets one text asking how it went. These come straight from Google. Read them all →
Two other companies told us to replace the whole system. This tech found a clogged drain line that had tripped the float switch. Saved us thousands and didn't try to sell us anything.
The replacement quote came with three options and the load calculation printout. Install crew put down floor covers and hauled the old unit away. Upstairs is finally cool.
Where we work
Local trucks, short drive times.
We serve Houston and surrounding areas. Owner Alex still answers the phone some days.
Tell us what it's doing. We'll take it from there.
Text a photo of the thermostat or the outdoor unit and we can often tell you what's wrong before the visit.