About
At John Miller ThermalTech, we believe every home and business in Los Angeles deserves reliable comfort year-round. Our skilled team specializes in energy-efficient heating and cooling solutions, duct work, indoor air quality, and preventive maintenance programs designed to extend the life of your HVAC system.
Services
- Commercial HVACUSD 276–688 · ESTIMATE
- Geothermal SystemsUSD 219–295 · ESTIMATE
- Heat Pump ServicesUSD 332–554 · ESTIMATE
Brands We Work With
Credentials
- License: LIC-48908-US Verified
- Insurance: Verified
- Background check: Passed
- Employees: 51-100
- Service radius: 41 km
Reviews (7)
- ★★★★★Very professional
Outstanding customer service from start to finish. John Miller ThermalTech went above and beyond to make sure we were comfortable.
- ★★★★★Friendly and efficient
We have used John Miller ThermalTech for years and they never disappoint. Honest pricing, quality work, and they always clean up after themselves.
- ★★★★★Highly recommend
Very happy with the service from John Miller ThermalTech. They replaced our entire HVAC system and the difference is night and day. Highly recommend.
- ★★★☆☆Quality workmanship
John Miller ThermalTech diagnosed and fixed our heating issue when two other companies couldn't figure it out. True experts.
- ★★★★★Very professional
Very happy with the service from John Miller ThermalTech. They replaced our entire HVAC system and the difference is night and day. Highly recommend.
- ★★★☆☆Highly recommend
Had John Miller ThermalTech come out for our annual maintenance. The tech was thorough and explained everything. Good value for the price.
- ★★★★★Good experience
John Miller ThermalTech diagnosed and fixed our heating issue when two other companies couldn't figure it out. True experts.