Phone: 023 9354 1154 – Email: info@spafix.co.uk

The image features the Vian Power logo. To the left, there's a stylized purple "V" shape. To the right, the text reads "VIAN POWER" in gray, with "LOW COST HOT TUB HEATING" below in white font on a green background, highlighting their energy-efficient heating solutions for hot tubs.

AIR SOURCE HEAT PUMPS

UP TO 75% MORE ENERGY EFFICIENT THAN
STANDARD HEATING OPTIONS

LOW COST HOT TUB HEATING

A Vian Power Air Source Heat Pump can be up to 75% more energy efficient than standard heating options. Simply put, they produce more heat (energy) than they use in electricity (energy).

This relationship between the power used by the heat pump and the heat it generates is referred to as Coefficient of Performance (CoP). For example, if a heat pump has a CoP of 8, then it will produce 8 x units of heat for every one unit of electricity consumed.
CONTACT US

VIAN C5

Two black, cube-shaped industrial fans with a speckled finish. They feature large circular fan blades prominently visible on the front. Both energy-efficient units have control switches and ports on the side. Branding with the name "WAIN" and model "ALPHA M45" is visible on the top front.

 Vian Power C5 Heat Pump on/off model 

Our C5 model comes with a titanium heat exchanger, R32 eco-friendly refrigerant and an auto defrost mode. This is a small, entry level model perfect for smaller hot tubs.
Was £1680 including pump & fitting
Now £1344 

VIAN C5 PLUS

Two black square-shaped electric fans with a textured surface, front and side views, manufactured by “Vian.” Both fans have large circular grills in front and a compact, sleek design. The fan on the right showcases HVAC control switches and ports on its side.

Vian Power C5 plus Heat Pump Inverter model

Our C5+ model is super compact for those difficult spaces. Fitted with a full DC inverter makes this model up to 20% more energy efficient than the C5.
Was £1860  including pump & fitting
Now £1488 

VIAN S7 PLUS

Two black HVAC units with curved designs on their front panels, each featuring a blue fan visible through a round grille. The metallic heat pumps, branded "Vihan," are positioned against a white background.

Vian Power S7 plus Heat Pump Inverter model

Our S7+ model is fitted with all the features of our C5+ model but is capable of not only heating hot tubs but also swim spas.
Our Best Seller
Was £2340 including pump & fitting
Now £1872

VIAN S9 PLUS

Two black HVAC units with curved designs on their front panels, each featuring a blue fan visible through a round grille. The metallic heat pumps, branded "Vihan," are positioned against a white background.

Vian Power S9 plus Heat Pump Inverter model

Our S9+ model is fitted with all the features of our C5+/S7+ model but is capable of not only heating hot tubs but also swim spas at a much faster rate.
Was £2580  including pump & fitting
Now £2064

VIAN C5

VIAN C5 C5 PLUS

VIAN C5 S7 HP & S9

HEAT PUMP SPECIFACTIONS

An image showcasing the VIAN C5 On/Off Heat Pump with a sleek black exterior. The table highlights its capacity, power, ambient temperature range, and features such as Wi-Fi compatibility, ultra temperature range, max power draw, and noise level.
An image of a full DC Inverter heat pump by Vian. It details capacity and CoP percentages at different temperatures (27°C, 10°C), usage, noise level, refrigerant type, flow rate, Wi-Fi capability, and dimensions (470x290x430mm). Badges indicate energy-efficient certifications and features for HVAC systems.
Specifications chart for the Wian Full DC Inverter Heat Pump model. Includes details on capacity, power draw, heating range, ambient temperature, CoP, energy efficiency in HVAC applications, ability to cool water, and features like Wi-Fi compatibility. Icons for various features are shown at the bottom.
An image of a data chart for a Full DC Inverter Heat Pump from Vian. The chart details power input/output, capacity at different temperatures, maximum temperature range, heating and cooling ability, and additional specifications. The energy-efficient device includes various certification logos.
DOWNLOAD BRCHURE

INSTALLATION / HOW IT WORKS

Electrical requirements:
The heat pump does not need any additional electrical installation on site as the unit can take its power from the hot tub or swim spa.

Location:
The heat pump requires a minimum of 500mm of inlet space and is recommended to have 1m of unobstructed space for the fan outlet.

Planning:
Each installation will vary, and a site survey to review and discuss the best fitment and location for the heat pump can be arranged. This is a great opportunity to discuss the best option for the installation of the heat pump and answer any questions.

Fitment:
When installing the heat pump some basic modifications to your hot tub or swim spa will be made. This is to plumb the heat pump into the heating and circulation system. There will be an inlet and an outlet pipe plumbed into the hot tub base or cabinet to provide circulation through the heat pump.

The fan in the air source heat pump draws air over a network of tubes that look a little like a car radiator.

These tubes are filled with an eco-friendly R32 refrigerant. The air then passes over the tubes warming up the refrigerant and turning it from a liquid into a gas.

This gas is passed through a compressor which increases the pressure and significantly raises the temperature of the gas, which is then passed through a titanium heat exchanger.

The swim spa or hot tub’s water circulation system is plumbed through the air source heat pump and the heat from the gas travels through the heat exchanger, which in turn heats the water from the hot tub or swim spa as it passes over it.

The refrigerant then cools and turns back into a liquid and starts the process all over again.

Diagram of an energy-efficient heat pump system showing the process of heat transfer. Cold fluid from the heat source is evaporated, then pumped and condensed to release heat into the heating system. Components are color-coded with blue for cold and red for hot elements.
Due to how the system works, our air source heat pumps will still produce heat even if the ambient air temperature is below zero as the compression process of the refrigerant gas creates alot of heat.

Not only is this a far more cost-effective solution to heat your hot tub or swim spa, but it is also a much more eco-friendly option.
CONTACT US

REAL WORLD TESTING

A bar chart displays monthly data from December 2022 to September 2023. The highest value, linked to heat pump performance, is in January with 121.64, and the lowest value is in September with 10.68. Each bar represents the total for a respective month.
The chart above shows the kWh used by the heat pump to maintain the set point of 40°C. The test period is for a 10 month period between the 8th December 2022 and the 7th September 2023.

The total kWh used by the heat pump over this period was 749.55. Accoring to Ofgem, from the 1st October 2023, new kwh rate will be set at 27.35p. With this pricing structure, the cost of this 10 month period at the coming rate £205, equating to an average cost of just £20.50 a month.
  • The hot tub is located outdoors in Chichester, West Sussex, UK, and not under a gazebo or shelter. All figures are just relating to the heating.
  • The electric heater is disconnected so all heating is supplied by the heat pump only.
  • We are testing a Vian 7kW S7 Plus Air Source Heat Pump which is set to boost mode. The hot tub is a mid-specification model of approx 1,550L of water. The hot tub is set to heat to 40°C.
  • We have used an older cover for these tests that is slightly waterlogged (to mimic real world). The pipes to the heat pump are not insulated.
  • The heat pump is within 1 metre of the hot tub. The hot tub has economy cycles set as follows: Economy from 10.00pm to 10.00am, 7 days per week. Second Economy mode from 1.00pm to 4.00pm.
A series of seven smartphone screens displaying a health tracking app with various statistics and graphs, akin to monitoring an HVAC system. Each screen shows a different day's data, including step count, distance, calories burned, and other activities displayed in a bar graph and numerical format.
A closed hot tub with a wood-like exterior finish, positioned outdoors under a wooden shelter. An attached black heat pump with a visible fan and "Vita Spa" branding is situated next to the hot tub. The surrounding area has a pebble-textured ground surface.
A black Vian heat pump unit is installed on an outdoor ground area in front of a wooden fence. The unit features a prominent circular fan with a blue triangular logo in the center. The surrounding area includes some wooden structures and a paved surface.
A black outdoor heat pump unit with a visible fan and yellow caution labels is installed next to a gray jacuzzi. The heat pump is situated on a tiled patio beside a wooden fence. There are some pebbles and small decorative elements on the ground nearby.
A closed hot tub with a gray wooden exterior is situated on a tiled patio beside a brick and pebble-dash wall. The hot tub has a black handle and matching steps on the left and is accompanied by a black heat pump on the right.
A large, covered outdoor hot tub with a gray wood-like exterior sits on a tiled patio. Steps lead up one side of the hot tub. Beside it, there is a black heat pump, and in the background is a wooden fence and some greenery.
A bubbling hot tub under a wooden pergola in a backyard. There are steps leading up to the hot tub, which has its cover partially open. Laundry is hanging on a clothesline nearby, and a brick house is visible in the background, surrounded by a well-manicured lawn.
A modern outdoor hot tub is situated under a wooden canopy with a patio area. The hot tub features a sleek, wood-like exterior, a water filtration system, and an attached cover. Nearby, there is a black fan and a set of gray steps leading into the tub. In the background, a lush, green field is visible under a clear blue sky.
The image features the Spa Fix logo, which includes a stylized design of water splashing upward from a small pool. The text reads "SPA FIX" in large letters, with the slogan "It's all your Hot Tub needs" in smaller text below, emphasizing their integration with advanced heating systems.

Contact Spafix Today

T: 023 9354 1154
E: info@spafix.co.uk

Unlock Exclusive Deals and Updates – Sign Up Now!

By submitting your email, you are giving your consent to receive email updates on products, special offers and exclusive discounts from Spafix
BISHTA Logo
Pool and Spa Scene Logo
EAL Logo
Certified Balboa and Certified Pool and Spa Hot Tub Technician Logos
Spafix Services Logo

Hot Tubs
Hot Tub Services
Hot Tub Maintenance
Hot Tub Repairs
SPA Moves
Maintenance Contracts
Spafix Hibernate Service
Book A Wet Test
Online Shop
Hot Tub Glossary
Service Areas

Blog
Testimonials
Terms & Conditions
Vulnerable Customer Statement
Privacy Policy
Complaints Procedure
Cookie Policy
Sitemap

Follow Spafix
Facebook Instagram Tiktok
2024 Spafix Services Ltd. All rights reserved. Credit is subject to status and affordability. Terms and Conditions Apply.
2024 Spafix Services Ltd. All rights reserved. Credit is subject to status and affordability. Terms and Conditions Apply. Spafix Services Ltd FRN: 741300, Unit B1 Hazleton Interchange, Lakesmere Road, Waterlooville, Hampshire, PO8 9JU is a credit broker, not the lender and is authorised and regulated by the Financial Conduct Authority. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC. Authorised and Regulated by the Financial Conduct Authority. Company Number: 06422739, VAT Number: 106654033

We are able to offer 0% finance over a period of up to and including two years with a deposit of 30% or greater. For a longer term or a lower deposit, we can provide an APR of 9.9%. Please note these figures are for a guide only, to provide an accurate quote on your final specification, please contact us.

Model:
Price: £
Deposit
Finance Term

    Deposit:
    £

    Total loan amount:
    £

    Amount on finance:
    £

    Amount on finance:
    £

    Monthly amount:
    £

    Monthly amount:
    £

    Total interest payable:
    £

    Total interest payable:
    £

    Total payable:
    £

    Total payable:
    £







    How did you hear about us?

    Spafix Start

    This service is also ideal for a Spring re-commission. Your hut tub MUST be full of water when our engineer arrives.

    Price depending on location

    Spafix Hibernate

    This is our Winter shut-down service, to prepare your spa for the months it will not be used.

    Price depending on location

    Spafix Easyfresh

    Quarterly drain-down and refresh service

    Price depending on location

    Spafix Once

    Full annual clean and maintenance service

    Price depending on location

    SOUTH & EAST

    023 9354 1154
    (local rate)

    map