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5

It is generally not worth the time and money to try to capture the lost heat through the exhaust system of the vast majority of tankless/on-demand water heaters. The heaters are now so efficient that they can vent the exhaust through plastic (PVC) pipe. Since these heaters also only operate when there is a call for hot water, they do not run very often. ...


3

Providing general wind break in the area will help. Regarding flow, you don't necessarily have to block where flow enters; you can also block the escape. I don't think it would hurt to plant some evergreen shrubs along the side of the wall and perhaps some trees around other areas of the (north) yard. A small fence around this area immediately in front of ...


2

It is better to keep a hot water hydronic heating system full of water all the time. This keeps air out, and prevents the inside of the radiators from rusting (assuming these are traditional cast iron rads). Recirculating the same water also helps limit the introduction of minerals from your water supply, so your rads and boiler won't clog up with mineral ...


2

Shutting some internal doors might help. Especially the door to the room upstairs with the return vent, to avoid pulling hot air upstairs. Anywhere air can get out upstairs (e.g. bathroom extractors, trickle vents) can encourage convection too. If there's heat in the downstairs hallway you might want to restrict it. I have had to do this with our (wet) ...


2

Just a guess, but the colder it gets the longer the boiler cycles and the hotter the delivery water temperature gets so therefore the radiators get hotter before the thermostat shuts the boiler off. In moderate temperatures, the thermostat shuts the boiler off before it gets very warm and so your radiators are barely above room temperature. Check to see if ...


1

If the upstairs is truly another zone there should be a separate damper to close it off or reduce the flow. Zoned means you have separate control over different areas. Sounds like you either need to adjust the existing damper or install one. Good luck!


1

For 30 years we had an old round mercury thermostat. It worked great. Then we bought a new Trane furnace with a new digital honeywell stat like the one above. The new stat freezes. It's programed and constantly gets stuck on the previous setting and doesn't adjust when it's supposed to unless I press a button, any button, then it wakes up and almost like it ...



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