Systems FAQSubscribe to RSS feed

Some questions get asked frequently on the Wall, and the Wallies usually have a lot of interesting and useful answers. We've collected some of the better ones here for you, and we'll be adding to this list often, so stop by again.

Fuel conversions

Draft control location? Read More

Hot water systems: Antifreeze

Can I add antifreeze to my heating system? Read More

Hot water systems: Boiler bypass

Why does the boiler manufacturer show it this way? Read More

Hot water systems: Buffer tanks

I want to use a buffer tank on this system, but how do I size it? Read More

Hot water systems: Modulating-condensing boilers

Who makes the best modulating-condensing boiler? Lots of opinions here. Read More

Hot water systems: Two-stage thermostat

How does a two-stage thermostat operate? Read More

Hot water systems: Wood floors and radiant heat

When getting hardwood ready for any floor it's common knowledge to have it sit in the space where it will be installed and let it adapt to the temperature and humidity levels. When asked, I always say wait two weeks before installing the floor. I'm at odds with a GC who says that three days is enough. I know it isnt. How long do you guys recommend? Read More

Insulation: Bubble-foil insulation

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Motors: ECM Technology

What is ECM technology? Many motors run with this these days. What is it all about? Read More

Oil Burners

Who makes the best oil burner? I was curious, so I asked. Here's what the Wallies had to say. Read More

Pipefitting: Drop Header

What's the point of building a drop header for a steam boiler, and what does it look like? Read More

Radiant systems: PEX pipe makes noise

There is a great thread on the Wall that addresses this issue. Read More

Radiators: Painting Steam Radiators

How do you paint steam radiators? Several ways to get the job done, but the preference seems to be for powder coating. Read More

Solar: Drain-back systems

What's the best sort of tank to use with a drain-back solar system? Read More

Solar: Flat panels or evacuated tubes?

Which is better, flat panels or evacuated tubes? Here's an interesting discussion between some very experienced people. Be sure to click on the links. Read More

Solar: Solar rights

Suppose you live in a neighborhood with a Homeowners Association and you want to put a solar collector on your roof. How should you approach the Board? Here's a spirited discussion of that situation. Read More

Steam systems: Best thermostats

We just had a new steam boiler installed and I'd now like to get a thermostat that will make the boiler run at its best. What should I do? Read More

Steam systems: Copper piping

Is it wise to use copper piping on a steam heating system? Read More

Steam systems: Radiator humidifiers

Where can I find those pots that hold water on steam radiators? Read More

Tankless water heaters

What are the pros and cons of tankless water heaters? Read More