Expansion Vessels

Our expansion vessels safeguard your heating and plumbing systems. Designed to accommodate pressure changes, they ensure longevity and efficiency, preventing damage and leaks.

Showing 1 to 32 of 92 products

30% OFF

ESi Controls 1 Channel Programmer

ES1247B

£47.35

£39.46

£67.64

£56.37
30% OFF

ESi Controls 2 Channel Programmer

ES2247B

£53.81

£44.84

£76.87

£64.06
30% OFF

ESi Controls 3 Channel Programmer

ES3247B

£59.18

£49.32

£84.55

£70.46
30% OFF

ESi Controls Mechanical Room Thermostat

ESRTM

£12.97

£10.81

£18.53

£15.44
30% OFF

ESi Controls Electronic Room Thermostat with Neon Indicator

ESRTE2

£13.63

£11.36

£19.48

£16.23
30% OFF

ESi Controls Electronic Digital Room Thermostat (vf) with TPI

ESRTD2

£25.84

£21.53

£36.91

£30.76
30% OFF

ESi Controls Electronic Digital Room Thermostat with TPI & Delayed Start

ESRTD3

£30.22

£25.18

£43.16

£35.97
30% OFF

ESi Controls Electronic Digital Room Thermostat RF with TPI

ESRTERFW

£58.81

£49.01

£84.02

£70.02
30% OFF

ESi Controls Programmable Room Thermostat - DS,OS,OS,TPI, LL

ESRTP4+

£40.90

£34.08

£58.42

£48.68
30% OFF

ESi Controls ESRTP4RF+ - Prog. Room Thermostat RF with Opentherm - DS,OS,OS,TPI, LL, OT

ESRTP4RF+

£87.10

£72.58

£124.42

£103.68
30% OFF

Free delivery

ESi Controls Programmable Room Thermostat Wifi Flush Mounted

ESRTP5WF

£121.10

£100.92

£173.00

£144.17
30% OFF

ESi Controls Electronic Dual Cylinder Thermostat

ESCTDEB

£27.98

£23.32

£39.97

£33.31
30% OFF

Free delivery

ESi Controls 22mm Y Plan Heating Pack

ES2YPLAN

£160.07

£133.39

£228.67

£190.56
30% OFF

Free delivery

ESi Controls 22mm S Plan Heating Pack

ES2SPLAN

£203.27

£169.39

£290.38

£241.98
30% OFF

Free delivery

ESi Controls 28mm S Plan Heating Pack

ES8SPLAN

£218.27

£181.89

£311.81

£259.84
30% OFF

ESi Controls Hot Water Cylinder Thermostat - Strap

ESCTS

£14.18

£11.82

£20.27

£16.89
30% OFF

ESi Controls High Limit Cylinder Thermostat

ESCTL

£12.61

£10.51

£18.01

£15.01
30% OFF

ESi Controls Mechanical Dual Cylinder Thermostat

ESCTD

£20.90

£17.42

£29.86

£24.88
30% OFF

ESi Controls Wiring Centre

ESWC1

£11.83

£9.86

£16.90

£14.08
30% OFF

Free delivery

12 litre Robokit Extra

CA-900012

£175.99

£146.66

£251.41

£209.51
30% OFF

Free delivery

18 litre Robokit Extra

CA-900018

£188.12

£156.77

£268.75

£223.96
30% OFF

Free delivery

25 litre Robokit Extra

CA-900024

£210.35

£175.29

£300.50

£250.42
30% OFF

18 litre Eres Eco Filling Kit

ER-18LTKIT

£91.49

£76.24

£130.69

£108.91
30% OFF

8 litre OEM Heating Vessel

HV8F

£97.73

£81.44

£139.61

£116.34
30% OFF

Free delivery

8 litre Robokit Extra

CA-900008

£168.80

£140.67

£241.14

£200.95
30% OFF

Free delivery

35 litre Robokit Extra

CA-900035

£285.18

£237.65

£407.40

£339.50
30% OFF

Free delivery

50 litre With Legs Robokit Extra

CA-900050CP

£461.89

£384.91

£659.84

£549.87
30% OFF

Free delivery

80 litre Robokit Extra

CA-900080

£600.41

£500.34

£857.72

£714.77
30% OFF

Free delivery

8 litre Robokit Compact

109-5005

£166.32

£138.60

£237.60

£198.00
30% OFF

Free delivery

12 litre Robokit Compact

109-5006

£175.56

£146.30

£250.80

£209.00
30% OFF

Free delivery

18 litre Robokit Compact

109-5007

£184.80

£154.00

£264.00

£220.00
30% OFF

Free delivery

8 litre Robokit Compact Plus

109-5008

£166.32

£138.60

£237.60

£198.00

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Expansion Vessels

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