Boilers, Hydronic and Radiant Heating

Probably not. A concrete slab has enormous thermal mass, and lag of several hours from a cold start is normal. That is why radiant homes do best with a steady setpoint rather than nightly setbacks. If the floor never reaches temperature, or one zone lags far behind the others, suspect air in the loop or a stuck zone valve and book a service visit.

Sometimes, but the usual suspects are a weeping pressure relief valve, a condensate drain that has backed up, or an expansion tank that lost its air charge and let pressure spike. Switch the boiler off at the thermostat, do not open anything, and call. If the puddle is warm and growing, shut the boiler off at its switch as well.

Air-to-water heat pumps that feed radiant loops exist and are common overseas. Local availability, contractor familiarity and fit for a specific loop design are research pending on our end, so we will not promise one on a web page. On site we can measure your loop's water temperature needs and tell you whether it is a realistic candidate.

Yes, and the idle time is exactly why. Pumps that sit for nine months seize, seals dry out, and dust settles into burners. A pre-season visit through our maintenance membership exercises the pump, checks pressure and combustion, and gets the boiler firing before the first cold morning instead of on it.

Often, yes. A wall-hung combi provides both radiant heat and domestic hot water from one compact unit, which suits a small casita with limited mechanical space. Cooling still needs its own solution, and gas supply to the outbuilding has to be sized for the extra load, which is an on-site question.

It depends on what you are opening up. If walls and ceilings are already coming down, adding ductwork and a heat pump becomes far cheaper than it would be in a finished house, and you gain cooling in the same step. If the slab and its radiant loops are staying, keeping a boiler for heat and adding cooling separately may preserve what you like most about the house. Our remodeled home guide walks through both paths.