John Demereckis delivers personal, no-nonsense heating & cooling service across the Denver metro. No upselling. No surprises. Just honest work at a fair price.
My name is John Demereckis — just call me John. I am based in Lakewood, Colorado and service the Denver metro area. I built this business on one belief: every homeowner deserves honest, expert service without the runaround.
I want to be your heating and cooling service provider that you can trust and rely on for years to come. I'll always give you a free phone consultation so we can talk through your needs before committing to anything.
I evaluate your system truthfully. You'll get exactly what you need — nothing more, nothing less.
You won't be sold services you don't need. My recommendations always put your interests first.
With years of experience and hundreds of 5-star reviews, you can count on honest, reliable service every time.
Ranked in the top 3% of HVAC contractors for performance, promptness, knowledge & honesty.
From emergency repairs to seasonal tune-ups, we handle everything your home's heating and cooling system needs — with honest pricing and expert care.
Flat-rate pricing for furnace cleaning and AC start-up. Transparent, honest, no hidden fees.
Fast, accurate diagnosis and repair for furnaces, boilers, and air conditioners. Fixed right the first visit.
Expert guidance to keep your system efficient and save money on energy bills all year round.
The #1 cause of HVAC problems. Dirty filters cause furnaces to short-cycle and AC coils to freeze. Replace monthly during heavy-use seasons.
You need at least 14 inches of attic insulation for maximum energy efficiency. Less than that and your furnace works twice as hard.
Use metal tape — not duct tape — to seal duct leaks. Leaky ducts steal conditioned air and force your system to overwork.
We'll discuss your heating and cooling needs on the phone at absolutely no charge. Get a free estimate on any service or new equipment installation.