Home Pick

Troubleshooting Radiator Not Working: Diy Fixes Costs & Tips

Are you experiencing issues with your radiators? Are your radiators no longer functioning?

Take a look at this helpful guide to get to root of the issue. it.


Are you experiencing issues with your radiators? Are your radiators no longer functioning?

Take a look at this helpful guide to get to root of the issue. it.

Introduction to Radiator Problems

The guide below outlines the various issues that can occur in radiators, and suggests ways to repair the issues. We will also talk about methods to stop damage to a radiator and the implications of not fixing any issues that arise, and the typical cost of hiring an engineer for heating.

This article can help in the event that your radiators aren’t functioning or you wish to avoid issues from the beginning.

Why is my Radiator Not Working?

In this article, we’ll discuss the potential causes for your radiator’s failure. We will explore a variety of possible causes, including boiler problems and water pressure. Other issues that could arise are that the radiator isn’t being heated, however it is leaking.

Boiler Issues

One of the most frequently encountered issues resulting from one radiator not working, or even more, is boiler problems. A possible issue could be that your boiler, and consequently each radiator isn’t heating, and/or there is no hot water. A damaged airlock or diaphragm could cause this issue.

Kettling is a different problem in which limescale or sludge has accumulated within the boiler, and is restricting water flow. This issue is known as”kettling” since it often sounded like boiling kettle. Other boiler issues are issues with thermostats and a condensate pipe that is frozen.

Radiator Cold at Bottom

If the radiator’s bottom is chilly, you could be inclined to turn up the thermostat in order to boost the temperature. However, this could result in an increase in the cost of heating. Your radiator might have a hot spot at its top, but it is cold in the middle because there is a blockage blocking fully flowing water flow inside.

Rusty fragments, dirty water, and limescale could quickly build up in a radiator. A blockage like this can stop heat from reaching the base of the radiator, and could cause problems for the central heating unit.

Radiator Cold at Top

A radiator can be cold on the top, but warm at the bottom because of the accumulation of particles, such as limescale and rust surrounding the upper part of the radiator. This can also have an impact on the central heating unit.

Heat Pump Isn’t Working

Central heating pumps are situated behind the boiler’s casing. There are a variety of reasons a heat pump could cease to function. The unit may be operating but it isn’t able to pump water. This could be due an issue with the shaft or propeller but it could be due to motor issues.

It’s possible that your heater is blocked, or airlocks have accumulated within. It’s not likely, but another possible cause could be that your heat pump has been set up in a way that was not correct.

Other possibilities include the pump’s speed settings that aren’t correct or leaking from the pump, an inability to power the pump, or possibly that the pump doesn’t shut off.

Stuck Valves

Pressure valves can be stuck causing overheating because your thermostat’s heat isn’t matched to the heat that is actually delivered to your radiator through your pressure valve. The valve is in the open position. Over time, wear and tear or thermostat issues could cause a valve to become stuck.

Water Pressure

The two most common causes of low pressure in the radiator are leaks as well as bleeding radiators. A leak can happen anywhere within the boiler system, and even the tiniest leak could ultimately lead to a decrease in pressure.

If you’re experiencing this there could be wet patches on the boiler, pipes or radiators. Another explanation is if you’ve recently been bleeding a radiator or boiler, it could have resulted in an increase in pressure since a radiator’s bleeding allows water to flow out.

How to Fix a Broken Radiator

Every cause for a damaged radiator will have its own unique solution which we will look at during this segment. We will look at ways to solve the mentioned radiator issues, including failure of the heat pump as well as stuck valves.

It is possible to choose to employ a heating engineer to fix your radiator. Certain fixes are better suited to hiring experts to resolve more than others.

How to Fix Boiler Issues

There are many solutions to address different boiler problems. Airlocks are among the most frequent problems encountered in boilers. To get rid of airlocks, a solution is to put the hose ends pipe over an unheated and cold tap and let water flow through the cold tap into the hot tap, removing any airlocks.

It is recommended to repeat the process at least eight times, with the cold tap running at intervals of 3-5 seconds. If the problem is kettling, or an accumulation of limescale and sludge then you’ll have to remove the particles. This can be solved by flushing out the radiator.

To do this, first shut off your radiator. then place sheets under the radiator in order to capture any sludge. Close the valves, and then bleed the radiator. The radiator is cleaned using the open bleed valve and by draining the radiator, and closing the valve to bleed.

Then, you can take the radiator out of its position and then run it through the hose to eliminate any limescale or sludge If you want. Follow these steps backwards and the problem will be resolved.

How to Fix a Radiator That is Cold at the Bottom

Blockages in the bottom of your radiator due to the rusty particles and sludge and limescale are easily fixed by flushing out the radiator.

This can be accomplished in the same manner as mentioned earlier, turning off the radiator and putting sheets underneath the radiator, closing the valves, and then bleeding your radiator using the bleed valve and draining the radiator and closing the valve for bleed before taking the radiator out in order to get it removed and hosed down. You should repeat these steps to complete the procedure.

How to Fix a Radiator That is Cold at the Top

If you notice blockages near the top of the radiator, you must flush the radiator by following the steps as above.

How to fix a heat Pump that isn’t working

If your heating system is operating but it’s not able for water to flow, using a light tap can be successful. If it’s the case that it happens and goes, it could be beyond its prime. In this instance, a new pump must be installed, and it is likely to cost in the region of £200£250. This includes the cost of installation and supplies.

To repair a damaged heat pump, utilize a hot flush with chemicals. If the issue is resolved, you might think about installing a magnetic filter to prevent this problem from happening again. Airlocks inside a heat pump could be resolved by turning very slowly the screw that bleeds the pump. The screw should be only opened around a quarter one revolution.

A tiny amount of water can be released when the airlocks are repaired. If it is possible that your heat unit was not correctly installed, you can correct it by changing the position of the unit. Before you do this, make sure that the system has been completely drained.

It is possible to refill the system following the loop to fill that is attached to your boiler. It is necessary to do this after you have reconnected the heat pump in a correct manner. If you suspect that the pump’s is not operating properly then you should investigate the issue by searching for a switch on top of the boiler’s motor.

If the flow rate is set to only 1 or 2, it may be too slow. It is possible to increase the rate of flow by switching it to 3. If you’re unsure about something, consider speaking with a professional prior to making a decision.

If there is a leakage within the pump, you must first make sure your pump’s secure prior to inspecting any fittings within the pump. If the two initial tests are satisfactory, examine the joint of the pump. It could be necessary to repair the seal and the pump.

If the pump isn’t running First, make sure the fuse hasn’t been blown, then search for leaks. If that doesn’t work then a replacement could be the only option. If you want to fix the problem with a pump that isn’t turning off, ensure whether your printed circuit board (PCB) is operating and then check if the overrun stat of the pump is operating properly prior to determining whether the mid-position valve is stuck.

If the valves in the first two have failed, then replacing them could fix the issue. For the mid-position valve, it is lubricated with a spray like WD-40.

How to Fix a Stuck Valves

If you notice a valve on your radiator stuck, you must first set the valve to the maximum setting before taking off the head. Inside the head, you’ll see the piston. If it is functioning properly it should move but with a valve that is stuck the piston will remain in a bind or will be stuck.

A lubricant like WD-40 is a good choice to loosen the piston. After the piston is loose, you can press it into place. If this doesn’t work, you might need to replace the valve, or employ a heating engineer to assist in resolving the issue.

How to Fix Water Pressure

If a leak has caused the water pressure to drop then you’ll need to determine the exact location where the leak is happening. Make sure you have towels and a bucket on hand to deal with any leaks that may occur while trying to fix the issue.

If you cover the radiator as well as its parts with the toilet roll, leaks could cause the toilet paper in that area to become damp, which will enable you to pinpoint where the leak is. When the leak appears to be originating from the body of the radiator It’s likely to be due to corrosion and replacing the radiator body will likely be needed.

The specific requirements to solve the leak, that is it is located on a particular part of the radiator may differ dramatically. PTFE tape is usually used in both cases except for the body of the radiator.

If you suspect a leakage in the valve of your radiator it is recommended to first drain the water beneath the leak, then lock the valve that shields you and turn off the power source before capturing the water that pours out. Then, remove the union nuts.

Then, you need to close the bleed valve to let water out then wrap the aft end of the valve with PTFE tape, tighten again the union nut and close the bleed valve and lockshield valves. Allow your radiator to fully fill. Verify that there aren’t any leaks in the system prior to closing the valve to bleed.

When the issue is from a spindle in the radiator, it’s possible to tighten the gland nut with an abrasive. If this fails then cover the gland nut with PTFE tape prior to tightening. If you’ve got leakage in the radiator gland, start by turning off the valve.

If water seeps out of the cap, it is necessary to shut off the valve for lockshield. Take off the cap made of plastic before loosening the gland’s nut. Cover the valve spindle with 20 cm of PTFE tape. Utilize the flat-headed screwdriver to drive this tape onto the body of the valve before screwing the nut back in its place, before replacing the cap with plastic and returning the valve to off.

If you suspect a pipe joint leak, you’ll have to remove your radiator from the water until the level of water is below the level of leak. By using a spanner, you can remove the nuts from the pipe in which the leak is located prior to applying PTFE wrap around your pipe to the point where the joint and olive meet. Then, you can tighten the nut in place.

How to Balance a Radiator

In this article, we will look at the process of balancing the radiator. We will go over the importance of balancing a radiator and how it can be done, and then discuss what indicators are to be looking for to ensure that your heating system is balanced.

Balancing a system of radiators involves altering the valves on your radiator so that you have an evenly dispersion of heated water to all radiators within your home. The first step is to flush all radiators, shutting off central heating and giving each radiator the time to cool.

Take out the valve for the lockshield of each radiator. If you have radiators that do not have a lock shield, you might need to take out the wheelhead valve, or a thermostatic valve if there is one. In either case, the correct valve must be turned counterclockwise.

A plastic adjuster or adjustable spanner is required to take the lock off, and the other valves may be removed manually. We’ll break down the remainder of the procedure by examining lockshield valves but the same process applies to wheelheads as well as thermostatic valves.

Switch up the central heat and note down the sequence when the radiators have been warmed up. Switch off the heating and let the radiators cool. After cooling then switch on the central heating and move to the first radiator you’ve listed (that warmed up first).

Then turn the shield clockwise until the lock is tightened and shut. Then, open it with one quarter of a turn. You can take a temperature reading from the pipes leading to the valves on the radiator. It is possible to use thermometers of radiators and pipe to accomplish this.

Slowly turn the shield until you see an increase of 12degC to your initial measurements. Take a look at every radiator in your home to find a temperature that is suitable to each one. It’s likely that the farther the radiator is situated from your boiler the further valve needs to be closed.

By altering these valves by adjusting these valves, you can balance all that are in the home. The two most important indications that your radiators require to be balanced is that those that are further away from the boiler are warmer or take longer time to warm up than the ones closest to the boiler.

How to Bleed a Radiator

In this article, we will look at how to bleed the radiator more thoroughly. We will discuss issues like why someone should have their radiator bled and the best way to get it accomplished. Bleeding a radiator is the process of releasing air that has been trapped inside.

There is a possibility of having to bleed the radiator due to air that is trapped can block water flow, producing cold spots in areas in which heated water hasn’t been able to reach. This could result in a radiator being heated at the top and cold at the bottom, and the reverse. You might be faced with problems with the radiator not heating in any way.

It is crucial to fix this issue because the issue could reduce the efficiency of your radiator and, if left unsolved, could end up paying for it by increasing your heating and thus raising your heating costs. The signs that your radiator needs bleeding are hearing gurgling, clucking or a flowing sound emanating through your radiator.

Other indicators are that the radiator takes some time to warm up, the top is significantly colder than the bottom, or in extreme situations it could be an entire radiator that is cold.

To flush a radiator, first you need to shut off your central heating system or the radiator that you want to bleed. Put some old towels under the radiator to ensure any leaks in the water during the process of bleeding.

Next step involves to open the valve for bleeding. Turn the bleeding valve counterclockwise for approximately a quarter of a turn. There should be a hissing sound when air escapes. Keep holding the position until the sound ceases, and you will see only water dripping out of the valve that is bleeding.

Then, turn it clockwise and shut the valve. Make sure you don’t tighten it excessively, but just enough to allow it to be able to return to its initial position. You can also choose to take this radiator out of its position in order to get it removed by a hose to eliminate any limescale, or even sludge.

It could or might not be required. Reverse the process and this should resolve any issues that are currently present.

How to prevent Radiators from breaking?

Prevention is usually more beneficial than treatment and in this section we will examine the steps you can take to stop a radiator from developing faults. We will go over different steps you can take, such as regular boiler maintenance.

Regular Inspection

One of the most effective methods to stop your radiators from causing issues is to examine them frequently. It is important to check them regularly for leaks. While water puddles can be the most obvious indication of a leak the water stains that appear under and around the radiator could be less obvious. It is also important to regularly check each component on your heater to make sure that there aren’t any cracks or excessively worn.


Regularly cleaning your radiators can aid in maintaining them over the long term. Because the efficiency of radiators depends on convection currents, it is crucial to ensure that dust doesn’t block efficient air flow. Thus, removing dust from your radiators regularly can help keep air flow problems from occurring which could cause damage.

Keeping Your Radiators Clear

When it comes to taking care of cleaning the radiator, it’s important to ensure that your radiators are free of any obstructions to the flow of air. Furniture and curtains are frequent culprits in this way. By keeping your radiator free of clutter, you’ll reduce the risk of things going wrong.

Boiler Service

The boiler should be maintained at least each year. A boiler service every year will allow you to identify problems before they become worse. Boilers also require regular maintenance to increase safety and extend their lifespan.

Bleeding Radiators

Even the radiators you have aren’t displaying signs that they require to be bled, squeezing your radiators once or twice will prevent any unnoticed issues from getting worse with time. Bleeding your radiators at least once per year, unless it is required more frequently is a great goal.

What Can Happen If I Don’t Fix my Radiator?

The failure to correct problems caused by a radiator could result in numerous dangers that we’ll examine in this section. We will discuss possible dangers like the failure of a boiler or central heating issues.

Broken Boiler

Failure to correct any issues relating to your boiler, or not having enough maintenance done could result in more serious issues for your boiler and heating system in general.

Broken Central Heating

A damaged central heating pump can create problems for the whole heating system if it is not taken care of. If it is not addressed an unresolved central heating pump can lead to internal damage and decrease the radiator’s heating efficiency. Central heating radiators must maintain them for the sake of their safety and to benefit the heating system as a whole.

Damaged Radiator

Damage or cracks to the radiator left untreated can cause your heating to stop functioning. This could lead to overheating, which in certain cases may even result in a fire.

Broken Diaphragms

A damaged diaphragm in an electric radiator can result in damage to heating system of the radiator since the heating could cease to function in any way. This can cause wear and tear as a result of increased frequency of temperature fluctuations.

Heating Engineer Cost

Now, we will look at the costs that are involved in projects like fixing a radiator or the cost of contacting an engineer for heating in the event of an emergency.

Heating Engineer Charge (Hourly)£20 to 40 per hour
Heating Engineer Charge (Daily)£160 to £550 per day
Emergency Heating Engineer Charge (Hourly)£40 to £60 per hour
Boiler Repair£150 to £400
Bleed 5-10 Radiators to Fix Cold Spots£80 to £100
Bleed 10-15 Radiators to Fix Cold Spots£100 to £150
Heat Pump Replacement£200 to £250
Valve Repair£50 to £150
Water Leakage Repair£50 to £150



  • All Post
  • Carpentry & Handywork
  • Cleaning & Housework
  • Costs
  • Damp & Insulation
  • Doors & Windows
  • Driveways & Paving
  • Electrics & Security
  • Energy & Conservation
  • Extensions & Conversions
  • Flooring & Tiling
  • Gardening & Landscaping
  • Heating & Plumbing
  • How to
  • Ideas
  • Kitchens & Bathrooms
  • Painting & Decorating
  • Uncategorized
  • windows cleaning
Turning houses into homes, one article at a time.
Recent Posts
  • All Post
  • Carpentry & Handywork
  • Cleaning & Housework
  • Costs
  • Damp & Insulation
  • Doors & Windows
  • Driveways & Paving
  • Electrics & Security
  • Energy & Conservation
  • Extensions & Conversions
  • Flooring & Tiling
  • Gardening & Landscaping
  • Heating & Plumbing
  • How to
  • Ideas
  • Kitchens & Bathrooms
  • Painting & Decorating
  • Uncategorized
  • windows cleaning
Contact Info

All Rights Reserved © 2023 HomePick

Scroll to Top