Water exiting condensate pipe per day

How much water exits an average condensate pipe in a day?

Asked by Monika Lydia on 7th Dec 2022
Expert Trade Answers
"It depends how much your boiler is being used and what temperature it is running at the more condensate you use the more efficient your boiler is working if it’s being used constantly at an efficient rate perhaps a bucket full"
Answered on 8th Dec 2024 - Member since Aug 2024 - report
"Hi, if this is a daily continues issue..
Then no it should not deposit much at all.
Have the unit seen to by an appropriate engineer"
Answered on 10th Dec 2022 - Member since Nov 2019 - report
"I depends on how well the boiler is set up. Some condense in line with the manufacturers guidelines others don't. Boilers are most efficient when the return temperature is about forty five degrees, so flow temperature and system balancing are the 2 most important factors. Set up well it can be ten litres an hour. If your not seeing much, it needs setting up."
Answered on 7th Dec 2022 - Member since May 2020 - report
"This depends on usage and pipework situation. There should be no water lying in pipework"
Answered on 27th Dec 2022 - Member since Nov 2019 - report
"The amount of water produced by a condensing appliance—whether it's a high-efficiency gas boiler or an air source heat pump—can be surprisingly high. For a typical household, you can expect an average of 5 to 8 liters of condensate per day, though this can spike significantly depending on the weather and usage.Factors Influencing Condensate VolumeThe "average" is a moving target because production depends on several variables:Humidity Levels: For air source heat pumps, the wetter and "muggier" the air, the more moisture the unit pulls out as it cools the coils. On a very humid day, a heat pump can produce upwards of 15 to 20 liters.Outside Temperature: Systems work harder when the temperature differential is high.Boiler Efficiency: In gas boilers, the condensate is a byproduct of the combustion process. The more gas you burn to heat the home, the more water is produced. A large house in the dead of winter might generate 1.5 to 2 liters per hour while the heating is running full tilt.Why the Volume MattersBecause this isn't just "tap water," the volume and delivery method are important for your home's maintenance:Acidity (Boilers Only): Boiler condensate is slightly acidic ($pH$ between 3 and 5). If your pipe exits into a soakaway rather than a drain, the high volume of acidic water can eventually damage concrete or kill nearby plants if not neutralized with lime chippings.Freezing Risk: Because the pipe carries a steady "trickle" rather than a gush, it is highly prone to freezing in winter. A frozen condensate pipe is one of the most common causes of system seasonal breakdowns.Drainage: If you are collecting this water (e.g., because you don't have a nearby drain), you’ll need a container significantly larger than a standard bucket if you don't want to empty it every few hours during a cold snap.Can You Reuse This Water?From Heat Pumps: This is essentially distilled water from the air. It’s great for watering non-edible plants or for use in a steam iron (as it won't cause limescale).From Gas Boilers: Do not reuse this. Due to its acidity and trace chemicals from the combustion process, it can harm plants and damage metal components.Are you seeing a specific amount of discharge that seems excessive, or are you planning where to route a new drainage line?"
Answered on 14th Apr 2026 - Member since Jan 2019 - report
"That’s a big of a broad question to be honest. Depends if the boiler heats the hot water and the central heating too."
Answered on 28th Jul 2024 - Member since May 2024 - report
"Depending how long is working the boiler, usually 2l/hr."
Answered on 7th Dec 2022 - Member since Dec 2022 - report
"Are you seeing the water? It should be into a soakaway or connected to a waste pipe?"
Answered on 7th Dec 2022 - Member since Jun 2022 - report
"Condense depends on a number of reasons - firstly it depends on how much you use your boiler , condense bottles in boilers generally hold about a pint of water and it’s quite common in cold periods for this to disperse 2/3 times per day - but it really is how much you have your system
On per day"
Answered on 7th Dec 2022 - Member since Oct 2022 - report
"depends on how often there boiler is used . 2 litres roughly"
Answered on 7th Dec 2022 - Member since Nov 2022 - report
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