2. Heat Pump Accessories
Air Source Heat Pump Accessories - Buffer Tank - ASHP Buffer Vessel

Our Solutions

Air Source Heat Pump Accessories 

Our range of accessories are designed to work with Baxi Air Source Heat Pumps heat pumps to help enhance the performance, efficiency and functionality of heating and hot water systems. 

Baxi HP40 and HP60 Air Source Heat Pump £500 cashback promotion - ASHP Installer offer

Baxi HP40 and HP60 Heat Pump £500 cashback promotion

Earn £500 cashback for every MCS commissioned qualifying heat pump install, when you register your warranty on Baxi Works.*

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Baxi High Temperature Monobloc ASHP

ASHP solutions built around you, backed by us

Our comprehensive range of air source heat pump solutions fits the needs of every project – and with expert support always on hand, you can trust us to deliver. When it comes to ASHPs, we’ve got the lot

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Our Solutions

Baxi 24 tr Buffer Tank

Heat Pump Accessories

Baxi 24 ltr Buffer Tank 

Purpose designed for use with our range of air source heat pumps, the A rated Baxi 24 Litre Buffer Vessel provides an efficient method for storing hot water that can be used to supply the system without activating the heat pump.  

Easy to install the inclusion of the Baxi 24 Litre Buffer vessel can help improve the overall seasonal efficiency of a heat pump system.

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Baxi usense -2 heating-controls

Heating Controls

Baxi uSense 2 Smart Room Thermostat

The Baxi uSense smart room thermostat is compatible with most Baxi Combi boilers. It means you can control your heating using our Thermostat app on your smart phone or tablet.

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ASHP Accessories HP40 & HP50

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ASHP Controller and Cylinder

Product code Product name ASHP + controller +
ASHP cylinder		 ASHP + Pre-plumbed
and Pre-wired cylinder		 Comments
7890025 Baxi ASHP Control ❗ ✖ A HMI is already provided with the HP40 and HP50, however you can choose to use this more advance controller.
More details can be find in section controllers
7837416 Baxi ASHP Cylinder 210L ✔ ✖ 2m2 coil
Standard Installation Kit includes External Expansion Vessel, Cold Control Pack and Contactor Box - for more details please consult the product manual
7837491 Baxi ASHP Cylinder 250L ✔ ✖ 3m2 coil
Standard Installation Kit includes External Expansion Vessel, Cold Control Pack and Contactor Box - for more details please consult the product manual
7837562 Baxi ASHP Cylinder 300L ✔ ✖ 3m2 coil
Standard Installation Kit includes External Expansion Vessel, Cold Control Pack and Contactor Box - for more details please consult the product manual
7853985 Baxi ASHP Pre-plumbed Cylinder 170L ✖ ✔ 2m2 coil.
Standard Installation Kit includes : External Expansion Vessel, Primary Flow Connection Kit, Mains Water Connection Kit and PRV Connection Kit - for more details please consult the product manual
7853986 Baxi ASHP Pre-plumbed Cylinder 210L ✖ ✔ 2m2 coil.
Standard Installation Kit includes : External Expansion Vessel, Primary Flow Connection Kit, Mains Water Connection Kit and PRV Connection Kit - for more details please consult the product manual
7853987 Baxi ASHP Pre-plumbed Cylinder 250L ✖ ✔ 3m2 coil.
Standard Installation Kit includes : External Expansion Vessel, Primary Flow Connection Kit, Mains Water Connection Kit and PRV Connection Kit - for more details please consult the product manual
7853988 Baxi ASHP Pre-plumbed Cylinder 300L ✖ ✔ 3m2 coil.
Standard Installation Kit includes : External Expansion Vessel, Primary Flow Connection Kit, Mains Water Connection Kit and PRV Connection Kit - for more details please consult the product manual

Outside Installation

Product code Product name ASHP + controller +
ASHP cylinder		 ASHP + Pre-plumbed
and Pre-wired cylinder		 Comments
7816801 Rubber Support For ODU 600mm (3 Pack) ✔ ✔ Dimension: 600Lx170W,100H mm each
Perfect if you would like noise reduction, and to elevate your ASHP to protect your unit from accumulation of snow when unit placed on the floor
100001369 HOSES 1" HEAT PUMP ✔ ✔ 870mm pre-insulated, flexible hoses. Will fit 4 to 6kWs
TBC HOSES 1"1/4 HEAT PUMP ✔ ✔ 870mm pre-insulated, flexible hoses. Will fit 7kWs and larger outputs
7902049 1" Antifrost Caleffi valve kit ✔ ✔ Frost protection valve 1". Set consists of 2 pieces. Will fit 4 to 6kWs.
If you do not use those, please make sure you use glycol in your system.
7902050 1 1/4" Antifrost Caleffi valve kit ✔ ✔ Frost protection valve 1 1/4". Set consists of 2 pieces. Will fit 7kWs and larger outputs.
If you do not use those, please make sure you use glycol in your system.

Hydronic Accessories

Product code Product name ASHP + controller +
ASHP cylinder		 ASHP + Pre-plumbed
and Pre-wired cylinder		 Comments
7879380 2nd Zone Accessory Kit ✖ ✔ For the Baxi ASHP Pre-plumbed Cylinder
Enables control of Central Heating across 2 zones, includes 1 x UPM3 Auto 25-70 Pump and 2 x 28mm Pump Union Valves
7859015 Temperature Probe Extension 20m ✔ ✖ For 1st fix or as an extension of the temperature probe between a standard ASHP cylinder and the HP40 & HP50.
100000030 Sensor DHW and TAS AD212 ❗ ✖ This is included with the Baxi ASHP Control - If need for first fix the DHW sensor, please order this item: 5m length Sensor + connector to our PCB.
7902049 1" Antifrost Caleffi valve kit ✔ ✔ Frost protection valve 1". Set consists of 2 pieces. Will fit 4 to 6kWs.
If you do not use those, please make sure you use glycol in your system.
7851676 Baxi 24L Buffer Tank ✔ ✔ This is to ensure proper compressor and defrost operations with an hydronic pressure break. System volume needs to be calculated. Typically used with 4 to 6kW.
7768655 40L Buffer Tank ✔ ✔ This is to ensure proper compressor and defrost operations with an hydronic pressure break. System volume needs to be calculated. Typically used with 8kWs and more ASHP.
7746242 Differential valve ✔ ✔ G¾” male. Used when you are over pressurising your heating system, this will allow your water to circulate - this is to protect the ASHP by by-passing the heating circuit.
100020167 Hydraulic Module 1direct circuit ✔ ✔ Distribute the heating system in 1 circuit
100020168 Hydraulic Module 1 direct circuit + Pump ✔ ✔ Distribute the heating system in 1 circuit with a pump when needs better water circulation - can check the temperature flow and return
7616233 Hydraulic Module 1 direct + 1 mixed circuit ✔ ✔ Hydraulic module consisting of a direct central heating circuit with pump and a mixed one central heating circuit with motorized mixer and pump.
2 pumps, with 3 way valves, and a collector for 2 circuits
100020164 Collector for 2 or 3 circuits ✔ ✔ To distribute water to two to three circuits.
You might want to use some wall brackets below.
7854127 Open distributor (6 connections). ✔ ✔ To distribute water to six circuits
100020165 Wall brackets for collectors ✔ ✔ Need to be ordered with 3661238575035 for complete set.
100020166 Wall brackets for collectors ✔ ✔ Need to be ordered with 3661238575028 for complete set.

Connectivity Accessories

Product code Product name ASHP + controller +
ASHP cylinder		 ASHP + Pre-plumbed
and Pre-wired cylinder		 Comments
7814703 GTW-IOT - Gateway Wi-Fi ✔ ✔ Plug in box to have access to the commissioning Wizard App: Baxi START, as well as having your ASHP remote connectivity ready. It also allow the end user to have access to their My Baxi App to remotely monitor their heating system. Works with the Baxi ASHP Control and the Baxi Pre-Plumbed Cylinder.
7745928 GTW-35 ❗ ✔ Tool to access the commissioning Wizard App: Baxi START for ASHP with the ASHP Control as well as the Baxi Boilers. Can be re-used for all Baxi jobs.
7902049 1" Antifrost Caleffi valve kit ✔ ✔ Frost protection valve 1". Set consists of 2 pieces. Will fit 4 to 6kWs.
If you do not use those, please make sure you use glycol in your system.
7851676 Baxi 24L Buffer Tank ✔ ✔ This is to ensure proper compressor and defrost operations with an hydronic pressure break. System volume needs to be calculated. Typically used with 4 to 6kW.
7842667 Pulse-meter kit ✔ ✔ This is for high accuracy energy monitoring when used with the Baxi ASHP Control
7808411 Kit solar ✔ ✔ For solar thermal integration in DHW tank
7684175 SET VALVE REVERSAL EH812 3 way valves - inversion valves between DHW or heating
100020168 Hydraulic Module 1 direct circuit + Pump ✔ ✔ Distribute the heating system in 1 circuit with a pump when needs better water circulation - can check the temperature flow and return
7616233 Hydraulic Module 1 direct + 1 mixed circuit ✔ ✔ Hydraulic module consisting of a direct central heating circuit with pump and a mixed one central heating circuit with motorized mixer and pump.
2 pumps, with 3 way valves, and a collector for 2 circuits
###### HYGRO SENSOR KIT FOR COOLING To prevent condensation in colling mode for underfloor - on/off
7622433 Set humidity sensor 0-10V HZ64 To prevent condensation in colling mode for underfloor - 0-10V

Back up heaters

Product code Product name ASHP + controller +
ASHP cylinder		 ASHP + Pre-plumbed
and Pre-wired cylinder		 Comments
7708345 SET BACKUP ELEC CONNECT EH904 ✔ ✖ Must be used if you do not use an electrical back up system - Manage Immersion heater on the electrical back up water tank.
Can also be used when offering 2 zones with valves only.
7755564 Electrical Back Up Heater 3kW ✔ ✖
7755565 Electrical Back-Up Heater 4.5k ✔ ✖

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