Free Shipping on All Orders!

Viessmann

Viessmann delivers innovative boilers, combi boilers, water heaters, and heat pumps engineered for efficiency, reliability, and sustainability. With over a century of expertise, their advanced technology provides precise heating, low emissions, and long-lasting performance.
Compare (0/5)

48 products

Black 1-1/2" three-way mixing valve with temperature gauge, brass ports, and adjustment lever on white background.

Viessmann 1-1/2" 3-Way Mixing Valve - 7134745

SKU #: VIES7134745   |   MPN #: 7134745
$640.67
$640.67 $0.00
MSRP: $661

Special Order

Brass and black 3-way mixing valve with temperature dial and lever handle for hot water system control.

Viessmann 2" 3-Way Mixing Valve - 7134746

SKU #: VIES7134746   |   MPN #: 7134746
$749.56
$749.56 $0.00
MSRP: $779

Special Order

Black coiled sensor cable with stripped wire ends and power plug connector.

Viessmann Low Loss Header Temperature Sensors for WB2B Single Boiler Applications - 7179488

SKU #: VIES7179488   |   MPN #: 7179488
$216.26
$216.26 $0.00
MSRP: $216.26

Special Order

Black coiled cable with orange connector block at one end for boiler temperature sensor.

Viessmann Low Loss Header Temperature Sensors for WB2A Single Boiler Applications - 7134240

SKU #: VIES7134240   |   MPN #: 7134240
$289.16
$289.16 $0.00
MSRP: $295

Special Order

3/4" brass 3-way mixing valve with black ports and temperature adjustment handle.

Viessmann 3/4" 3-Way Mixing Valve - 7134742

SKU #: VIES7134742   |   MPN #: 7134742
$480.49
$480.49 $0.00
MSRP: $493

Special Order

Black rectangular insulation header with four yellow and black connector ports on sides.

Viessmann Type 160/80 Low Loss Header Insulation - 7834480

SKU #: VIES7834480   |   MPN #: 7834480
$835.38
$835.38 $0.00
MSRP: $872

Special Order

Black rectangular low loss header with yellow and black connection ports on sides.

Viessmann Type 500/300 484GPM Max 8" Flange Low Loss Header - 7834476

SKU #: VIES7834476   |   MPN #: 7834476
$7,702.27
$7,702.27 $0.00
MSRP: $7,702.27

Special Order

Black rectangular low loss header with four yellow and black connection ports extending from sides.

Viessmann Type 450/250 374GPM Max 8" Flange Low Loss Header - 7834475

SKU #: VIES7834475   |   MPN #: 7834475
$6,367.36
$6,367.36 $0.00
MSRP: $6,367.36

Special Order

Black rectangular low loss header with four yellow and black threaded ports protruding from sides.

Viessmann Type 400/200 251GPM Max 6" Flange Low Loss Header - 7834474

SKU #: VIES7834474   |   MPN #: 7834474
$3,859.84
$3,859.84 $0.00
MSRP: $3,859.84

Special Order

Black rectangular low loss header with four yellow and black threaded ports on sides.

Viessmann Type 250/150 119GPM Max 4" Flange Low Loss Header - 7834472

SKU #: VIES7834472   |   MPN #: 7834472
$2,975.01
$2,975.01 $0.00
MSRP: $2,975.01

Special Order

Black rectangular low loss header with yellow and black flanged ports on sides.

Viessmann Type 500/300 484GPM Max 8" ANSI Certified Flange Low Loss Header - 7537711

SKU #: VIES7537711   |   MPN #: 7537711
$6,896.69
$6,896.69 $0.00
MSRP: $6,896.69

Special Order

Black rectangular low loss header with yellow and black connection ports on sides.

Viessmann Type 300/200 189GPM Max 5" Flange Low Loss Header - 7834473

SKU #: VIES7834473   |   MPN #: 7834473
$3,284.55
$3,284.55 $0.00
MSRP: $3,284.55

Special Order

Black rectangular low loss header with four yellow and black threaded ports positioned vertically on sides.

Viessmann Type 160/80 44GPM Max 2.5" Flange Low Loss Header - 7834470

SKU #: VIES7834470   |   MPN #: 7834470
$1,837.45
$1,837.45 $0.00
MSRP: $1,846

Special Order

Black rectangular low loss header with four yellow and black threaded connection ports on sides.

Viessmann Type 450/250 374GPM Max 8" ANSI Certified Flange Low Loss Header - 7537710

SKU #: VIES7537710   |   MPN #: 7537710
$5,813.71
$5,813.71 $0.00
MSRP: $5,813.71

Special Order

Black cylindrical low loss header with four yellow and black connection ports.

Viessmann Type 200/120 80GPM Max 3" Flange Low Loss Header - 7834471

SKU #: VIES7834471   |   MPN #: 7834471
$2,362.46
$2,362.46 $0.00
MSRP: $2,362.46

Special Order

Black rectangular low loss header with four yellow and black threaded ports for fluid distribution connections.

Viessmann Type 400/200 251GPM Max 6" ANSI Certified Flange Low Loss Header - 7537709

SKU #: VIES7537709   |   MPN #: 7537709
$4,165.27
$4,165.27 $0.00
MSRP: $4,165.27

Special Order

Black rectangular low loss header with four yellow and black threaded ports on sides.

Viessmann Type 300/200 189GPM Max 5" ANSI Certified Flange Low Loss Header - 7537708

SKU #: VIES7537708   |   MPN #: 7537708
$3,176.59
$3,176.59 $0.00
MSRP: $3,176.59

Special Order

Black rectangular low loss header with four yellow and black flanged connection ports.

Viessmann Type 250/150 119GPM Max 4" ANSI Certified Flange Low Loss Header - 7537707

SKU #: VIES7537707   |   MPN #: 7537707
$2,797.84
$2,797.84 $0.00
MSRP: $2,797.84

Special Order

Black rectangular low loss header with four yellow and black threaded ports for fluid connections.

Viessmann Type 200/120 80GPM Max 3" ANSI Certified Flange Low Loss Header - 7537706

SKU #: VIES7537706   |   MPN #: 7537706
$2,066.26
$2,066.26 $0.00
MSRP: $2,066.26

Special Order

Black rectangular low loss header with four yellow and black threaded ports for fluid connections.

Viessmann Type 160/80 44GPM Max 2.5" ANSI Certified Flange Low Loss Header - 7537705

SKU #: VIES7537705   |   MPN #: 7537705
$1,704.45
$1,704.45 $0.00
MSRP: $1,704.45

Special Order

Viessmann FAQ

What types of Viessmann boilers are available?

Viessmann offers standard boilers, combi boilers, and hydronic systems with condensing technology for high efficiency and reliable performance.

What is a Viessmann combi boiler?

A Viessmann combi boiler provides both space heating and hot water in a single, compact unit, delivering convenience and energy efficiency.

Are Viessmann heat pumps energy-efficient?

Yes, Viessmann heat pumps are designed for high efficiency, using advanced technology to reduce energy consumption while maintaining optimal comfort.

What makes Viessmann water heaters reliable?

Viessmann water heaters feature corrosion-resistant Vitocell tanks, fast recovery rates, and low standby losses for dependable hot water supply.

Can Viessmann products help reduce environmental impact?

Yes, all Viessmann boilers, heat pumps, and water heaters are engineered for low emissions and sustainable operation, supporting energy-efficient and eco-friendly practices.

Do Viessmann boilers come with user-friendly controls?

Yes, Viessmann boilers offer intuitive controls and precise temperature adjustments for ease of use and comfort.

Are Viessmann products suitable for both residential and commercial applications?

Absolutely. Viessmann designs its boilers, combi boilers, and heat pumps to meet a wide range of heating and hot water needs.
Free Shipping on Everything!
30 Days Free Returns
Secure Payment
Expert Customer Support