24 Seven AC LLC
📍 Houston, TX 77077
24/7
Advertises 24/7HVAC contractor
Lange Mechanical Services, LP
📍 933 Wakefield Dr, Houston, TX 77018
About this listing
Lange Mechanical Services, LP is listed in Houston, TX. New split-system air conditioners installed anywhere in Texas must meet a minimum of 14.3 SEER2 under the federal South-region standard — worth knowing when you compare quotes, since a cheaper unit that falls below it cannot lawfully be installed here.
Round-the-clock service: this contractor advertises 24/7 emergency availability on their own website. We have recorded the claim, not verified the hours — confirm someone will actually answer before you rely on it at 2am.
Is Lange Mechanical Services, LP the right fit?
Based on what Lange Mechanical Services, LP lists with AirProHQ: services offered are HVAC contractor. They advertise 24/7 emergency availability, though we have no independent hours on file to confirm it. We do not have a corroborated Texas contractor licence on file for this listing — ask to see one before booking. For anything not covered here — such as whether they specifically serve commercial or multi-unit properties — that's worth confirming directly with Lange Mechanical Services, LP before you book, or compare other Houston contractors first.
Services
What HVAC work typically costs in Houston
Before you call Lange Mechanical Services, LP, it helps to know the going rate. These are national ranges for 2026 — ask any contractor for a written, itemised quote and compare it against them.
| Job | Typical cost |
|---|---|
| Diagnostic / service call | $75 – $200 |
| Capacitor replacement | $100 – $250 |
| Refrigerant recharge | $200 – $600 |
| Compressor replacement | $1,300 – $2,800 |
| Central air conditioner | $3,900 – $7,900 |
| Full HVAC (furnace + AC) | $5,000 – $12,500 |
Ranges from our AC repair cost guide andHVAC replacement cost guide. Houston sits in a hot-climate market, where systems run more hours a year and wear out sooner than the national average.