Boilers and radiant heat, handled with care.

Hydronic heat is the quietest, most even comfort a home can have, and it is common in two very different kinds of Denver homes: classic brick houses with cast iron radiators, and custom estates with radiant floors. Besties HVAC Solutions services, repairs and replaces boilers and radiant systems across the metro with the patience these systems deserve.

Hydronic work rewards experience and careful diagnosis. We take the time to understand your whole system, from the boiler to the last zone valve.

Signs your boiler needs attention

• Some radiators or floor zones stay cold while others heat
• Banging, gurgling or knocking in pipes
• Pressure relief valve dripping or pressure swinging
• Boiler short cycling or locking out
• Water around the boiler, fittings or circulator pumps
• Rising gas bills with no change in comfort

Classic radiator homes

Neighborhoods like Country Club, Park Hill, Washington Park and parts of Cherry Creek still have homes heated by cast iron radiators. Many of those systems have been converted over the decades and include a mix of old and new parts. We bleed and balance systems, replace circulators, zone valves, expansion tanks and controls, and when replacement makes sense, size a modern boiler to the actual radiation in the house rather than the nameplate of the old one. For cooling, these homes often pair beautifully with ductless or slim-ducted heat pumps, which add air conditioning without tearing into plaster.

Radiant floors and luxury homes

Radiant floor heating is a signature of many high-end Denver and south metro homes. These systems depend on correct water temperatures, mixing valves, manifolds and controls. Problems often show up as one cold bathroom or a zone that never quite catches up. We diagnose at the manifold and controls level, and we service the boilers that feed radiant floors, indirect water heaters and, in some homes, snowmelt loops.

High-efficiency boiler replacement

Modulating condensing (mod-con) boilers adjust output to the weather and can deliver significantly better efficiency than older cast iron boilers when paired with outdoor reset controls and suitable water temperatures. Like furnaces, gas boilers must be set up for Denver's altitude per the manufacturer's instructions. Combi boilers that also provide domestic hot water can make sense for smaller homes. We will explain which approach fits your home and why.

Boiler maintenance and safety

Hydronic systems run quietly for decades when they are looked after. Annual service includes a combustion check, inspection of the heat exchanger and venting, testing of the pressure relief valve and low-water safety controls, checking expansion tank pressure, verifying circulators and zone valves, and confirming system pressure and water condition. Condensing boilers also need their condensate trap and neutralizer serviced. Skipped maintenance shows up as noisy pipes, cold zones and lockouts on the first cold night of the year. If you notice water at the relief valve, frequent pressure changes or a burning smell, call us. If a carbon monoxide alarm sounds, leave the home and call 911 or Xcel Energy from outside first.

Comfort Club members receive annual maintenance, free diagnostics and repair discounts, and the same priority scheduling we give forced-air clients.

What boiler and radiant heating service typically costs in Denver

Typical range, exact quote after diagnosis or free replacement estimate. Venting, piping changes and permits affect final price.

Included with every visit

• Combustion and safety testing
• Pressure, expansion tank and relief valve checks
• Circulator, zone valve and control diagnostics
• Altitude-correct setup on new equipment
• Clean, careful work around finished spaces
• Written price before work begins

Want priority service and free diagnostics all year? See Comfort Club maintenance plans, or contact us with questions.