Questions tagged [condensate]

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Tankless water heater condensate

I have a Navien tankless and it drains outside. Does the unit run without demand? My concern is that the condensate could freeze upon exit and back up the drain. We use the house (NJ) most weekends ...
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5answers
1k views

furnace condensate - system to collect and then drain periodically

We have a condo in Northern WI that gets used sporadically over the winter, we keep the furnace running at a low temp while we are not there. Last winter the furnace condensate draining into the ...
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2answers
54 views

Should I make holes in condensate pump's basin?

One of our air-conditioners is supposed to drip condensate into a pump, which is then supposed to push it outside. Nothing extraordinary, and it mostly works... Because not all water drops into the ...
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2answers
50 views

Condensate drain line corroding foundation. Looking for solution

Our furnace is in an attic, above a two story home. The installed condensate drain runs to an outside wall and drips. The slightly corrosive condensate drips onto a piling with a steel connection ...
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1answer
153 views

Is it safe to tie a water heater pressure release pipe into an HVAC condensate drain line?

The current setup in my basement has a long pvc pipe going from the HVAC system to a floor drain about 8 feet away. When I had a new water heater installed the plumbers put in a drain pan underneath ...
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0answers
56 views

How to shorten this pipe from AC condensation pump?

I have a mini-split AC unit with a built-in condensation pump. This pipe is connected, but it goes down and up like a U. The manual says it must go upwards to prevent water from pooling in the pipe. ...
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0answers
36 views

Should condensate pipe go below vent and how?

Need to lay condensate pipe from the boiler room to the waste pipe, on the other side of my flat. Will use condensate pump and use loft as proxy. I want to drill through ceiling from my boiler storage ...
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1answer
178 views

AC drip pan not draining until p-trap cap is opened

We had our AC replaced and have been having some issues. Currently it seems like the drip pan isn't draining until I pop open one of the clean out ports on the higher level on the p-trap that was ...
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2answers
64 views

Why doesn't my condensate pump drain very well?

I'm working on a crawl space encapsulation. One of the last steps for me to do is to setup a dehumidifier. I bought a Santa Fe Compact 70 and a condensate pump to go with it. I'm discharging it about ...
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2answers
129 views

Can the condensation line (using a condensate pump) of a basement hybrid water heater be connected to a waste line directly above the water heater?

The water heater is an 80 gallon Rheem Hybrid Heat Pump device. The waste line that is directly above the water heater is a 3” Schedule 40 pipe that feeds into a 4” Schedule pipe that goes to the ...
32
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9answers
7k views

Can I gain AC efficiency by spraying condensate water on the outdoor coils?

Recently, I was working from the basement and I noticed tonnes of condensate water going down the drain, and thought I might re-use it to improve the efficiency of my home AC system. So I put a ...
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1answer
588 views

Help! Condensate pump is so loud and working when minisplit is off

Help! New homeowner here. We have a carrier minisplit in our bedroom, which works well. We live in a rowhouse (so two brick walls on the side), so a condensate pump is used to pump water onto the roof ...
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3answers
140 views

Central A/C Draining Causing Stagnant Water - Dry Well?

I have a central air system with a condensate drain line that exits my home near the actual AC compressor on the side of my house. The original installers put in a cement cylinder that the line ...
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1answer
198 views

Natural Gas Tankless water heater condensate volume

I'm looking to install a Natural Gas Tankless (condensing) water heater (likely Navien 240). I am planning the drain line (which will have a neutralizer on it to reduce the acidity). The installer &...
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0answers
31 views

How to further troubleshoot a problem with my condensate pump?

During a recent trip to be basement I noticed that the floor was wet under my condensate pump. This pump collects the water from my water heater but it's powered through my boiler. There was a lot of ...
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3answers
2k views

Central Air condensate is pumped into a hole in the basement floor?

I’ve tried to do some research on this topic but am a little confused and would like to know if I’ve got a problem here that I need to remedy. I think I want to install a self-draining dehumidifier in ...
1
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1answer
275 views

HVAC Condensate Line P Trap

I've consistently experienced issues with my AC. I won't get into all of the background, but I would like to know if the pictured condensate line is appropriately trapped. The vertical PVC pipe is not ...
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2answers
66 views

What is this strange valve/trap from my boiler to condensate pump?

I have a condensate pump attached to a valiant combi boiler with the usual pvc pipe turning into it (removed in picture, but works fine going into the point behind the copper pipe here), with the also ...
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0answers
46 views

Drain Hose - Reverse Water Pressure in Standby

I have 5 drain hoses from various appliances (dishwasher, laundry washer, AC condensate, water softener, water filter) that all have the standard regulated air gap to a sink. I imagine drain pumps on ...
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2answers
70 views

What is the dynamic head capacity of this pump?

I am looking to buy a condensate pump that can push water 20' away ( I need to circumvent the fact that I can't slope a drain through the ceiling so I need the pump to push 8' up and then another 10' ...
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2answers
212 views

Looped air conditioner condensate line not draining?

Using our split air conditioner for the first time, the wall unit started dripping water. Its condensate tube runs through the wall into an adjacent attic and then into the DWV vent stack. The tubing ...
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1answer
448 views

Just put calcium carbonate rocks in my condensate water pump or buy a whole condensate kit?

Can I just put some calcium carbonate rocks in my Beckett water pump (see photo of pump, below) to neutralize the HVAC condensate, or do I have to spring for a whole assembly, like this (The refills ...
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4answers
270 views

What is this rubber tubing called?

What is this rubber looking elbow here called and where can it be purchased? It's the black part that is fastened to the 3/4" pvc using hose clamps. For some context, this is a condensate drain on an ...
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0answers
363 views

How to newly wire furnace condensate pump that contains a safety switch?

I would like to replace my current Little Giant furnace condensate pump that has no safety switch with the Little Giant VCMA-15ULS, 65 GPH Automatic Condensate Removal Pump w/ Safety Switch - SKU ...
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2answers
1k views

Need help with wiring to thermostat and condensate pump

I've searched a lot and can't quite find what how to solve this one. I installed an ecobee smart thermostat, which didn't work with 5 wire connection so I switched to their PEK module with only 4 ...
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0answers
30 views

Hvac condensate line not draining, New ac system

Hi so I just purchased a house. It was a bank foreclosure. The bank installed a new ac unit. The ac wasn't running in day one. I figured out it was bc the condensate line wasn't draining properly. The ...
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0answers
87 views

split system air conditioner condensate hose

I need to buy and install a split AC and I have a small issue. The AC has two copper pipes for refrigerant gas to flow through and one hose to eliminate condensation water, and normally, the hose ...
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1answer
1k views

Two HVAC units on one condensate drain line

I am renting a house with two HVAC units - one upstairs and one downstairs. There were two condensate drain lines (one per unit). The units were older so when they quit working efficiently the ...
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1answer
2k views

Overflow line tied with Condensate Line

had a house inspection done and the inspector told that Irregular materials were used, I am attaching a pic. how much work is it to repair it? is it a easy fix? Thank you
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2answers
274 views

Why is there a drain trap high on a wall above an air gap?

I realize this question is not about "home" improvement but as I had to deal with drain and vent lines recently, I was curious to note this installation at the Costco. There is what it seems a ...
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1answer
3k views

Tankless water heater plumbing: neutralized condensate and pressure relief valve

Hello recently my old 50gal gas water heater developed a crack and started leaking. I replaced it with a tank-less gas heater. Everything is good, I installed the proper intake an exhaust with 3in ...
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2answers
3k views

Condensate drain line freezing. Need an internal solution

I have a residential 16-SEER four-ton air handler/heat pump unit with a built-in humidifier. Both summer AC condensate and winter humidifier over-run feed into a condensate pump which is on the ...
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0answers
37 views

How to get Condensate Pump to talk to Sonoff 4CH Pro R2

I currently have a WiFi water alarm triggering a Sonoff 4CH Pro R2 to kill my whole house humidifier. So I have some experience with triggering the relays and getting the two devices talking to each ...
3
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1answer
4k views

What kind of tubing should I use for draining condensate from a furnace / boiler?

"High efficiency" & condensing boilers or furnaces produce an acidic water byproduct called condensate that has to be drained away. My boiler has an outlet fitting for this condensate water but ...
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2answers
2k views

Why is the second condensation drain on my central air unit active all of a sudden?

The largest of my three central air units in the attic has two drip condensation pipes coming out of the evaporator coil box (not one that had an overflow opening that drips into the overflow pan). It ...