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Furnace blower runs all the time. Dissconnected thermostat wires, still runs. There's 2 wire harness that go to ecm, ones power the other is communication. With thermostat and communication harness disconnected the blower still runs. So I'm assuming there's a short in the ecm?

Any ideas

Any ideas

Sometimes I get 24 volts to furnace gas valve sometimes 10 volts. So obviously it won't fire at 10v. I'm leaning towards board. Can a faulty thermostat cause this

How do you test a hot surface igniter on a furnace or boiler. Do they all require different ohms or amps

When I run the sink on the right, the middle sink ptrap gargles. If i take the AAV off problem goes away. Everything drains fine. Would that mean AAV isn't opening or it's pushing air instead of pulling or drain is partially plugged? Do they make more sensitive AAV?

What do you think

Can a vent go up, then over, then back down and tie into another dryvent

I want to swap out a thermostat for a high efficiency furnace. American Standard. On the furnace its labled D R B/C. I'm use to R W C. Can someone make sense of this for me

For a hot water tank, what's the pros and cons. Would it produce same amount of hot water

Can these be used as isolation valves? Are they flow control valves?

Sdr rubber?

Was repairing two of these identical in length. All new parts, and used lock tight. Cut the brass rod the same length. One works fine, but the other sprays water out of the nut unless fully closed or fully open. There's no debris left over in housing. And no damage to the rubbers. Only...

Do they make a tool to tighten the nut right after the shut off. What do you guys use? All my crescents almost open all the way to tighten it. Is there a tool for the lock nut and they other side of tool for the vacuum breaker nut. Don't say strap wrench

Laundry and dishwasher? I don't have them in my house and I hear no hammer. Average psi in town is 40-60 psi. We don't have water meters, expansion tanks, pressure reduce valves or backflows in 95% of are houses here. I could maybe understand if you had 80psi. Can someone tell me the theory...

Got called on having no hammer arrestors on a laundry box. I know they make hose adapter ones for this situation, does it look bad? Or just change out the whole box with built in ones? Drywall going up soon

Anyone know what this grey piece is with the tube? I need a new one

I'm only pumping up 8 feet but is it ok to use eight 45's on discharge. I ran 1" PVC The Saniplus is a 1/2 HP pump system used to install a complete bathroom up to 15 feet below the sewer line, or even up to 150 feet away from a soil stack. It incorporates a macerating system which can...

Do you guys put tub on concrete floor and do flooring around it or flooring first

Anyone know about these, I've seen some bypassed.