Save £100 on your new Worcester Bosch heat pump

In most cases, air source heat pump installations are classed as ‘permitted development’ - meaning you don’t need planning permission. It’s worth noting, though, that there is still guidance to be met, such as the unit being at least 1 metre from the property boundary, and if you live in a conservation area or listed building then additional restrictions may apply.

Regardless of the type of heat pump, they all essentially transfer heat from one place, such as the air, ground or water, to another, such as to heat inside your home. They do this using electricity to power a compressor and evaporator, which is similar to a household refrigerator but in reverse. 

Heat pumps are a very efficient option for heating your home. You could expect around 250-300% efficiency from a typical air source heat pump, and 350-400% efficiency from a ground source heat pump! The exact efficiency will vary depending on the type, make and model of heat pump you choose, as well as the average temperature where you live, and how well insulated your home is. 

The Boiler Upgrade Scheme (BUS) is a government scheme offering grants of up to £7,500, to help homeowners with the cost of installing energy efficient, low-carbon heating systems such as heat pumps. 

The latest smart controls can improve the efficiency of a heat pump even more. The Passiv Smart Thermostat increases the efficiency of a heat pump by 17% as verified by the Energy Saving Trust. It can also optimise a heat pump to use cheap electricity from smart energy tariffs and rooftop solar panels.

The Passiv Smart Thermostat is automatically included in your Boxt installation of a Worcester Bosch heat pump. Just fill in your property information and select Worcester Bosch heat pump, and a Boxt engineer will install the Passiv Smart Thermostat alongside your new heat pump.

Unlike boilers, a heat pump’s efficiency largely depends on how it’s operated. Letting the heat pump run at lower temperatures for longer can make your heating far more efficient to run. However, this requires calculating exactly how much heat you need and tweaking the heat pump settings to achieve the perfect balance. The Passiv Smart Thermostat manages the complexity for you. It automatically learns how your home heats up and cools down then runs your heat pump in the most cost effective way possible, taking into account weather forecasts, electricity tariffs and solar generation. Just set when you want to be warm and have hot water, and the Passiv Smart Thermostat will do the rest.

Eligibility:
The promo code is exclusively valid for the purchase of Worcester Bosch heat pump installations through the BOXT website.
The discount will be automatically applied by using the relevant URL on the Passiv website or other relevant channels.

Exclusions:
This promo code is not valid for any other products or services and cannot be applied to additional charges such as delivery, installation, or ancillary products unless otherwise specified.

Usage Restrictions:
The promo code cannot be used in conjunction with any other discounts, promo codes or offers.
The discount applies solely to the price of eligible products and does not cover any additional fees, such as installation or delivery, unless expressly stated otherwise.

Validity:
BOXT reserves the right to modify, suspend, or terminate the promo code at any time without prior notice.
Customers are encouraged to check promotional materials or the Passiv and BOXT website for information on expiration dates or other applicable restrictions.

General Terms and Conditions

Non-Transferability:
Promo codes are strictly non-transferable and cannot be exchanged for cash or other alternatives.

Misuse and Fraud:
Any unauthorized use, distribution, or application of the promo codes may result in the cancellation of the discount and/or the order, as well as potential further action at BOXT's discretion.

Limitations:
Promo codes are subject to availability and may be withdrawn or modified at any time at the sole discretion of BOXT.

Amendments:
Passiv and BOXT reserves the right to update, amend, or alter these terms and conditions at any time without prior notice. Any such changes will be communicated via the Passiv and BOXT website or other official channels.

Support and Queries:
For any questions or additional support regarding the use of promo codes, customers are encouraged to contact BOXT customer service directly.

Effective Date: 18/12/25