Hydronic Heating Guides for Denver & the Front Range

Two things in a Colorado basement tend to give out within a couple of years of each other — the boiler and the water heater. So every fall I get the same question: can one box replace both? Sometimes, yes. The appliance that does it is a combi, and in the right house it is a clean answer. In the wrong house it is a hot shower that goes lukewarm the moment someone starts the dishwasher. Here is how I tell those two houses apart, before anyone spends money. What a combi actuall

A condensing boiler drains acidic water every time it runs. If that line leaves heated space it freezes, blocks and faults the boiler. What to check now.

No heat, or a cold house with a boiler that seems fine? The supply and return pipes sort it into six states in five minutes. Here is how to read them.

One cold room is almost never a flow problem. Here is what actually causes it, and what you can check yourself in five minutes.

A priority zone heats the tire tracks and the walk instead of the whole slab. Here's what that actually saves on a Denver-area snowmelt system, and what it doesn't.

A snowmelt system does its hardest work the first night it runs. The fall check for glycol, pressure, flow meters, sensor and firing, and what not to do to the fluid.

Night setback saves almost nothing on a heated slab and costs you a cold morning. The thermal mass math on a Front Range radiant floor, and what to do instead.

Most Denver boilers run one water temperature all season. What outdoor reset does, why it matters most on a condensing boiler, and the one thing to check before it gets cold.

Most no-heat calls trace to two things you can see in September: system pressure under 12 psi, and trapped air. Here is the ten-minute check to run now.

Hydronic heating, boiler and snowmelt work across the Denver metro and Front Range from a Littleton shop. Design loads run about 25 to 40 BTU/hr/ft² by era.

Heating a detached shop or barn in Parker and eastern Douglas County: radiant slabs, edge insulation, glycol, and why tube depth costs you 7°F forever.

Lone Tree homes run near 25 BTU/hr/ft², a load so low most boilers short cycle all winter. What every start costs, and how to tell if yours is doing it.

On a steep, north-facing Morrison driveway, snowmelt is an access problem, not a comfort item. Design load runs about 126 BTU/hr/ft². Here's what that takes.

Wheat Ridge boilers still circulate through original iron pipe. Roughly 70% of returned circulators fail on water quality. Here is the five-minute check.

Your Ken Caryl boiler still runs after fifty years. Older Front Range homes load near 40 BTU/hr/ft², and that number decides whether keeping it makes sense.

In a Lakewood ranch the living room hits 74 while bedrooms sit at 65. Zoning, balancing and outdoor reset fix it. Front Range loads run 25–40 BTU/hr/ft².

Greenwood Village homes run radiant, baseboard, hot water and snowmelt off one boiler. A mod-con only condenses when return water is below about 130°F.

Golden's brick houses still have their original cast iron radiators. Before you tear them out for ducts, find out what they can actually deliver below 180°F.

Propane boilers, altitude derate, and outage-proof hydronic heat in Evergreen. Why a tight foothills home may need only about 25 BTU/hr/ft² of design load.

Tube at the bottom of a 4-inch pour instead of mid-height raises required water temperature about 7°F for the life of a Castle Rock house. Here's why.