HVAC and Plumbing Across Dallas–Fort Worth
Family owned and serving all of DFW since 1987, with HVAC service in Keller from our Sports Parkway shop. Licensed and insured. Upfront flat-rate pricing.
What we do
HVAC and Plumbing, Handled by One Team
One call covers your air conditioning, heating, air quality, and plumbing with the same flat-rate pricing on every job.
Heating & Air Conditioning
All HVAC services →
Plumbing
All plumbing services →
Why Service One
Built on Experience, Backed by Integrity
Proven Experience
30+ years and thousands of DFW systems repaired, replaced, and maintained.
Honest Recommendations
Flat-rate written quotes before work starts. We repair when it’s smart and replace only when it isn’t.
Fast Response
Same-day appointments and 24/7 emergency dispatch, and a live person answers every call.
Guaranteed Work
Licensed, insured, and backed in writing. If it isn’t right, we come back and make it right.
How it works
Three Steps to a Fixed System
Schedule Service
Call 817-329-0000 or book online. Same-day appointments across our service area; emergencies dispatched 24/7.
Expert Diagnosis
A licensed technician diagnoses the problem and gives you one written, flat-rate price before any work begins.
Reliable Solutions
We fix it right, clean up, and guarantee the work in writing. Most repairs finish the same visit.
Plan ahead
Financing and HVAC Maintenance Plans
Financing for New Systems
Replace a failing system now and pay over time, with the full flat-rate price approved before installation.
- 0% promotional financing with approved credit
- Fast approval decisions, often same day
- Options for most credit situations
Annual HVAC Maintenance Plan
Two scheduled tune-ups a year keep your warranty valid, your bills lower, and summer breakdowns rare. See what each HVAC maintenance tune-up covers.
- Spring cooling and fall heating tune-ups, scheduled for you
- Priority scheduling ahead of non-members
- Member discount on repairs
About Service One
Family-Owned Experts You Can Trust
Alan Davis opened Service One in 1987. Today he runs it with his son Bryce, and their name is on every truck in your driveway. We focus on honest work, reliable service, and treating every customer like family.
Experienced Team
Licensed technicians delivering consistent, high-quality HVAC and plumbing service.
Customer First
Honest recommendations, transparent pricing, and long-term relationships.
Reviews
Rated 5 Stars by Your Neighbors
Real, verified Google reviews from homeowners across the Dallas–Fort Worth Metroplex.
Common questions
Before You Call
How fast can you get to my house?
We offer same-day service across the Dallas–Fort Worth Metroplex, and 24/7 emergency dispatch. Most emergency calls are on-site within a few hours.
How does your flat-rate pricing work?
You approve one written, flat-rate price before any work begins. The price is based on the job, not the hours, so it never changes mid-repair.
Which brands do you service?
We repair and maintain all major residential brands, including Trane, Carrier, Lennox, Rheem, Goodman, American Standard, and Daikin.
How often should my system be serviced?
Twice a year: a cooling tune-up in spring and a heating check in fall. Our maintenance plan schedules both automatically.
Do you really answer at 2 a.m.?
Yes. A live person answers 817-329-0000 around the clock, 365 days a year, and dispatches an on-call technician.
Do you offer financing?
Yes. We offer financing on system replacements with approved credit, including 0% promotional options. Ask when you book.