Family Owned & Operated Since 1978 — Frankfort, IL
- Heating
Heating
Heating Services
in Frankfort, IL
Furnace, boiler, and heat pump experts — installation, repair and seasonal
tune-ups for homes and businesses.
Heating
Stay Warm All
Winter With D & T
When the temperature drops, you need a heating system you can count on. Our certified technicians install, repair, and maintain all major heating systems with honest recommendations and reliable workmanship — backed by 45+ years of experience in the Frankfort area.
- Same-day service available
- Upfront, flat-rate pricing
- Financing on new installs
- All major brands serviced
- Licensed & insured technicians
- 100% satisfaction commitment
What We Offer
Services Included
Comprehensive heating solutions for homes and businesses.
Furnace Repair
Gas, electric, and oil furnace repair for residential and commercial systems.
Furnace Installation
High-efficiency furnace replacement and new system installs sized to your home.
Boiler Service
Boiler repair, replacement, and radiant heating system installation.
Heat Pumps
Air-source and geothermal heat pump installation and repair.
Annual Tune-Ups
Pre-season inspections to keep your heating system efficient and reliable.
Emergency Heating Repair
24/7 emergency furnace and boiler repair when you need it most.
- Trusted Since 1978
Signs You May Need Heating Service
Catching small problems early saves you money and prevents winter
breakdowns. If you notice any of these warning signs, give us a call.
- Uneven heating between rooms
- Unusual banging or rattling
- Rising heating bills
- Frequent thermostat adjustments
- Furnace short-cycling
- Yellow pilot light or burner flame
- System over 10 years old
- Excess dust or dry air
Why D & T
The D & T Difference
Decades of trusted service for homeowners and businesses across the Frankfort area.
Family Owned Since 1978
Decades of trusted HVAC service for homes and businesses.
Residential & Commercial
From single-family homes to commercial rooftop units.
Heating, Cooling & Refrigeration
Full-service expertise across every system type.
Reliable Service Plans
Maintenance contracts that keep systems running strong.
Emergency Repairs
Fast response when your system goes down.
Honest Recommendations
Straightforward advice — no upsells, no surprises.
Financing Available
Flexible options on qualifying installations.
Priority Service Contracts
Front-of-line scheduling for contract customers.
How It Works
Our Simple 4-Step
Process
From your first call to comfort restored — clear, honest, and on time.
Call or Book Online
Reach out for service, a quote, or emergency repair — we respond fast.
01
On-Site Diagnosis
Our techs assess your system and explain options in plain language.
02
Honest Repair or Install
Quality workmanship using proven equipment and brands you trust.
03
Comfort Guaranteed
We follow up to make sure everything runs perfectly all season long.
04
FAQ
Answers to Common HVAC Questions
Don’t see your question? Give us a call — we’re happy to help.
We recommend a full tune-up twice a year — heating in the fall and cooling in the spring — to maintain efficiency and prevent breakdowns.
Yes. We provide emergency HVAC repair for both residential and commercial customers in Frankfort and surrounding areas.
Yes — we offer flexible financing on qualifying installations so you can upgrade without straining your budget.
Absolutely. We service, repair, and replace rooftop units, refrigeration systems, and full commercial HVAC equipment.
We work with all major HVAC and refrigeration brands and recommend the best fit for your home, business, and budget.
24/7 Emergency Service
Need HVAC Service
You Can Trust?
Call D & T Heating & Cooling today or book online for professional heating, cooling, refrigeration, repair, installation, and maintenance services.