What Is Weather Compensation For Boilers? Benefits & Uses

James Elston
Written by James Elston
Updated on 1st December 2023
Posted on 30th November 2023
Topic: Boiler Guides
what is weather compensation for boilers

Weather compensation controls & kits for boilers and central heating

new boilers

Weather Compensation for your boiler is an efficient heating method that is better for the environment and will also help save energy and money on your energy bills, and nobody likes wasting energy, but ensuring your home is adequately heated can be a tightrope.

One way to ensure your home optimises energy efficiency is to invest in a Weather Compensation control system.

This article will explain what weather compensation is, how it works, and the benefits you will enjoy should you choose to install it in your home.

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What Is Weather Compensation?

ideal compensation kit

The weather compensation controller is intended to regulate your boiler’s operation based on the internal and external temperature, and if you are getting the best combi boiler to ensure that your energy bills are lower, installing a weather compensation kit with your combi boiler can help even more.

A Weather compensation controller assists your home in maintaining optimal heat while minimising fuel waste associated with boiler systems turning on or off at specific times, regardless of internal or external temperatures which helps save money on your energy bills.

How Does Weather Compensation Work?

The controller changes the boiler flow temperature directly as the outdoor temperature changes, ensuring timely changes in the heat delivered. It avoids situations that can occur with “conventional” central heating room thermostats.

ideal compensation kit

Such as the house is either too cold (before the thermostat activates to create demand). Or when it’s too hot (after the thermostat activates to create demand – residual heat released from radiators after the thermostat is satisfied, or due to poor siting of the thermostat itself)

A high-quality weather compensation system like this Ideal one will help to keep the desired temperature constant without the homeowner noticing a difference.

What Are The Benefits Of Weather Compensation?

The benefits of installing a weather compensation system in your home include reducing energy usage by between 10% and 40%, and by doing this, you may lower your energy costs and make your house more environmentally friendly.

As well as improving your home’s energy efficiency, they can also benefit your overall heating systems. Some of these benefits include the following;

  • Cleaner air
  • Increased safety
  • Reduced corrosion rates
  • Reduced system noise
  • Increased comfort through optimal temperatures
  • Less wear and tear to system components
  • Reduced heat loss systems won’t be under that much pressure when working efficiently, helping them last longer. This can be another way homeowners don’t have to panic when the temperature in the house drops. Also, they can be relieved once they realise they save money with the weather compensation system.

Weather Compensation Control

The weather compensation control operates the boiler at the lowest flow temperature. While also providing enough output to the heat emitters to maintain comfort. This aids in optimising the boiler’s operation in condensing mode, thereby saving fuel and increasing boiler efficiency.

How Do You Install Weather Compensation Systems?

If your weather compensation system doesn’t use GPS weather data, you must mount the external sensor on a north-facing wall. If you are getting a new boiler, this should be done at the time of installation.

The detector will be linked to the boiler so that it can transmit data dictating the amount of heat generated.

The instructions are based on a heat curve, with heat generated when the outside temperature reaches a certain point.

When selecting a heat curve for your system, your engineer will consider radiator heat output in the home, when it reaches a point. As well as outside temperatures.

This ensures that the heating system efficiently heats the home based on outside temperatures in order to keep the temperature.

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Surely, a SMART investment

Most manufacturers include weather-compensation control with their boilers, with the control system either built into the appliance or available as an optional extra. Similarly, any required outdoor sensor is either standard or available as an optional extra.

When combining appliances and weather-compensation devices, it is critical not to deviate from the boiler manufacturer’s instructions and guidance.

The connection of these devices to boilers may, by design, limit their full-rate operation. When operating the appliance at full load, the device may need to be safely disconnected, such as during appliance commissioning or servicing.

What Affects The Efficiency Of Weather Compensation?

A weather compensation system will help keep your home at a consistent temperature. Room temperatures will be maintained by a steady heat output that reacts to the information sent by the external air sensor.

This can be a great way to increase the efficiency of your home’s central heating system. However, you should consider certain factors that can affect the running of a system like this.

Usage pattern

How you use your home will be important when using weather compensation. If the house is empty during the day with people working and kids at school, there will be little benefit in having a system that maintains a set temperature.

This type of heating is not as responsive as others, so if you had the heating off, it would not warm the property as quickly before maintaining the set heat.

Alternatively, people that frequently use the property can benefit from maintaining a temperature rather than turning the heating off, letting it cool, and then having to reheat it.

It can even save power and money to possess a steady warmth making it hot, rather than having to reheat a whole house every time you come in.


The insulation a property has can have a significant impact on the efficiency of weather compensation.

While insulating your home can improve efficiency in some ways and reduce heat loss, for example, that means fewer cold nights, it can cause inaccurate readings of room sensors.

This is because small heat sources, such as hairdryers, kettles, or even sun shining through windows, can be hot and that can cause a rise in the warmth that doesn’t spread to other areas of the house where it could be cold. This uneven spread of warmth can be an issue with some systems.

In cases like this, a multi-room sensor system can help to keep a desired temperature across the home.

Thermal mass

Your home’s thermal mass refers to its ability to absorb, store, and release heat. The speed at which this warmth is released in the house is known as thermal lag.

This can affect how hot the outside temperature immediately impacts the home.

A reactive system that quickly responds to internal temperature changes in the home can be useful for houses where this could become an issue for adjusting.

The property layout and size

The type of property you own and the layout and size will significantly impact how a system like this will work.

Different properties can be affected by their neighbours, particularly terraced homes and flats.

Open-plan properties will typically achieve a more stable area for sensors to report the temperature of the home accurately.

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Weather Compensation Kit FAQS

Is a weather compensation sensor worth buying?

Although many internet-enabled “Smart” controllers on the market today, can use GPS weather-data to provide the same functionality, an external detector may need to be installed on a north or west-facing wall, or a wall that isn’t affected by solar gain. The device’s instructions should guide the proper location and installation of any sensors.

Weather compensation systems can be a worthwhile investment for homes inhabited for long periods, as their most significant benefit is maintaining a steady temperature.

Homes where the occupants are out for most of the day, might not see the same advantages.

Elderly homeowners, people who work from home, homes with kids, and those typically inhabited for the majority of the day will enjoy the blessings they offer.

Will how airtight my property is impact weather compensation?

Yes, properties that are not airtight will have air changes that can achieve cooler outside air into the property, which will be significantly more noticeable on windy days.

Properties with a Mechanical Heat Recovery system (MVHR) may face similar issues as this introduces fresh air into the property.

Should the boiler’s maximum flow temperature be reduced?

Weather compensation helps with power conservation and reduces fuel usage and waste by managing the home’s needs. This can reduce the amount the boiler is at its maximum modulation mode. Still, there may be times when the boiler has to be at full capacity to maintain the room temperature during the winter when the temperature drops.

Do I need multi-room sensors to control compensation in my home?

Multi-sensors can be helpful in specific properties but can be a more expensive option.

Using a multi-sensor compensation system will allow you to independently control individual room temperatures throughout your home and a smart thermostat could also do this.

It will allow you to monitor outside temperatures and individually control emitters throughout your home. The thermal mass, layout, and insulation of your home will all impact how necessary this option will be for you.

While this does allow for more specific temperature regulation, it can result in the system working harder to warm some rooms as the heat dissipates into spaces that are not being heated.

It can be a suitable option for individuals who work from home and find themselves in a home office for most of the day. There will be little requirement for the entire dwelling to be heated all day, allowing for efficient heating for comfort.

What heating system works best with weather compensation?

All heating systems can be adapted to operate well with weather compensation and new boilers are designed to work well with them, but having an air or ground source heat pump can work exceptionally well.

This is because these systems rely on more gradual home heating and aren’t as reactive as other boiler systems.

They rely upon gradually heating the home and the ability of the property to hold and keep the temperature.

Other more reactive boiler systems can also benefit from the systems not being used in such a demanding way. The boiler’s operation may use a timer system that turns it on at specific points of the day when it has to operate at full capacity to reach a temperature set by the room thermostat and to provide an adequate water temperature.

Final Thoughts

A weather compensator can significantly reduce energy consumption and ensure your home maintains a steady, comfortable temperature regardless of the weather conditions.

As well as using less fuel and improving your environmental credentials, it is a great way to reduce heating bills. Boilers can wear down over the long term if you use them to warm your home without regulating the temperature, so compensation can help improve your system’s longevity and get the most extended lifespan from a new boiler.

Conscientious consumers are looking at the best ways to ensure their homes are efficient. This can include everything from high-quality double-glazed windows to insulating properties and installing more efficient heating systems.

Weather compensation is another excellent option that can be perfect for some properties depending on the key factors discussed in this article.

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Written by
James Elston
James Elston Director Of Boiler Central
Posted on: 30th November 2023
Topic: Boiler Guides

James Elston is our resident boiler replacement and heating expert here at Boiler Central. With over 20 years experience in the boiler installation industry, James ensures that he knows everything there is about our Gas Safe boiler installations, energy saving and home heating solutions. This can be from simply procuring the latest best combi boilers, to reviewing and ensuring that Boiler Central maintains the highest standards across our boiler installation company.

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