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ROMA: Since 1999Fast, Fair and Reliable ServiceLicensed and BondedFree EstimatesNo Hidden FeesYour local Lennox dealer


604 704 0300
Emergency Service
Hot water works but not heating 6
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Hot water works but not heating


Why is my towel rail not getting hot?

You may notice that the towel rail is not heating up and, specifically, the top rungs of the rail are colder than the bottom ones. You may also have heard knocking or tinkling through your pipes and radiators. This is usually caused by trapped air and bleeding will normally solve this.

How do you unblock a radiator?

Using the radiator key, loosen the lockshield valve and tilt the radiator to drain off as much water as possible. Use the radiator key to close the bleed valve and remove the radiator from the wall. You can now take the unit outside and use a hose to manually flush out dirt and residue.

How long should it take my radiators to heat up?

On a good day it can take 1 1/2 hours. When I say heat up, I mean fully. However it can take an hour just to get any heat in them. I’ve tried turning the downstairs rads off and just having the upstairs on first.

Can you put radiant heat under hardwood floors?

Solid hardwood or engineered wood floors work fine with today’s high-tech radiant heat systems – whether on subfloors or concrete slabs. You can add inlays to new or existing wood floors over radiant heat and you also can paint and stencil the floors.

How big of a water heater do I need for radiant heat?

How big of a water heater do you need for radiant heat? Unfortunately there are a lot of factors that go into the size of a water heater to use for infloor heating. The average output needed is 25 BTU per square foot, but that could be higher or lower depending on your circumstances.

What temperature should I set my boiler for underfloor heating?

Underfloor heating requires a flow temperature of 50°C flow and 40°C return, so using UFH with a condensing boiler is ideal for taking advantage of this.

What can go wrong with underfloor heating?

Underfloor heating can affect wooden flooring if used ineffectively. Rapid changes in temperature can cause stress on specific types of wood. If you constantly switch off your underfloor heating system from a really high heat, this can cause strain on the wood and subsequent damage.

How do I fix an unresponsive thermostat?

If the thermostat is still unresponsive, make sure the breaker is shut off and remove the cover. If it looks dirty inside, use canned air or a soft artist brush to clean away accumulated grime that may be affecting its functionality. Then look for issues like loose wiring or terminal screws and tighten them up.

Why is my vertical radiator not getting hot?

An issue that can occur over time is that the valve pin can become a little stuck and if this is stuck in the off position then the radiator will not generate any heat. The way to fix this is to initially remove the thermostatic valve head to check whether the pin is stuck.

How do I know if my boiler thermostat is working?

To confirm that it is most likely a boiler thermostat problem, shut down the system, turn the temperature on your controller down to zero, and do the same with any in-room thermostats if you have them. Turn it on again, but keep your hot water off so you can check the central heating first.

How long can you be left without heating and hot water?

However, you shouldn’t experience loss of heating during the cold season for more than 24 hours. Anything more than two days can be interpreted as a hazard to the tenant’s health and therefore a serious breach in the tenancy agreement. Lack of hot water is an emergency regardless of the season.

Why is my hot water working but not heating?

No heating or hot water
This issue can be caused by anything from faulty motorised valves, broken system diaphragms and airlocks, to low pressure or a broken thermostat. To determine whether this issue is caused by low pressure, you should check your pressure gauge to see if it is below 1.
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