Dimplex Coldwatcher MPH500, 500W Heater


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Product Number: HE18167



Why buy me

  • Product model: Dimplex Coldwatcher MPH500 multi purpose heater
  • Colour: Willow white and Birch grey finish
  • Heat output: 0.5kW / 500W
  • Power supply: 230V
  • Fuse rating: 13(A) amp
  • NOTE: The Dimplex Coldwatcher MPH1000, 1.0kW heater version is available
  • 2m power cable fitted with UK plug
  • Weight: 1.5kg
  • Warranty: 1 year


  ✔  In-stock
  ✔  Available in 2 – 3 working days
  ✔  Price includes VAT & Delivery to UK Mainland
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Dimplex Coldwatcher MPH500, 500W Heater


Product Number: HE18167



Dimplex - Heavy-Duty Cold Watch Heater IPX4 1kW - DIMMPH1000



Did you know?

The Dimplex Coldwatcher MPH500 multi purpose heater is a compact, durable heater, designed for when reliable frost protection is required. The Dimplex Coldwatcher MPH500 multi purpose heater comes in two versions, (a) MPH500, (0.5kW) version and the (b) MPH1000, (1kW) version. Both heaters are controlled by a variable thermostat with a minimum setting suitable for frost protection.

The Dimplex Coldwatcher heater is specially designed for situations where localised heating is needed, or where a small heater is only necessary for general heating or frost protection. The Dimplex Coldwatcher MPH500 multi purpose heater is a versatile and robust unit, ideal for greenhouses, lofts, garages, utility rooms, sheds, chalets, spare rooms, conservatories, airing cupboards, outside, water closets, kiosks, yachts and even checkouts.



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Product specification

  • Product model: Dimplex Coldwatcher MPH500, multi purpose heater
  • Colour: Willow white and Birch grey finish
  • Heat output: 0.5kW / 500W
  • Power supply: 230V
  • Fuse rating: 13(A) amp
  • Frost protection convector heater
  • Freestanding or Wall-mountable heater
  • Adjustable thermostat
  • Constructed from lightweight weatherproof metal casing
  • 1.8m power cable fitted with UK plug
  • IPX4 rated
  • Energy saving thermostatic control with frost protection
  • Thermostat: variable, bi-metallic with frost protection at lowest setting
  • Neon mains indicator
  • Overload protection
  • Lifting handle for easy mobility
  • 1.8m cable and fitted plug supplied as standard
  • Heater dimensions (Height x Width x Depth): 33.0cm x 22.5cm x 15.0cm
  • Weight: 1.5kg
  • Speak to our friendly expert team for further technical product details
  • Warranty: 1 year


What’s in the box?

  • Dimplex Coldwatcher MPH500, (500W) multipurpose heater
  • 1.8m cable and fitted plug supplied as standard
  • Installation Manual



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What is a BTU?

1 BTU is the amount of heat required to raise the temperature of one pound of liquid water by one degree from 60° to 61° Fahrenheit at a constant pressure of one atmosphere. As a general rule we advise you to buy an Air Conditioner with a minimum 7,000BTUs as this is the minimum required to cool a small room (18m2) on a hot day. Medium rooms (24m2) need around 10,000BTUs and larger rooms and office spaces (36m2) require around 15000BTUs.

Stocked item delivery options

We offer FREE Delivery as a standard delivery option on all our products. Delivery is only free to UK Mainland , this includes England, Wales and parts of Scotland. International deliveries will incur a delivery charge. Please ring our sales team for assistance.

Please note

Order before 3pm between Monday- Friday for  Next Working Day delivery.  Next Working Day refers to Monday to Friday and excludes weekends and Bank Holidays.

Returning an item

We offer a no quibble 28 day returns policy on all goods supplied, subject to a few minor exceptions. You are responsible for returning the goods purchased in their original packaging. Find out more on our Returns Policy Page


All delivery times and dates especially next working day and weekend delivery times are always provided as a guide and are not ‘guaranteed’. We use reliable couriers with a 99.9% success rate however once a consignment is within the courier network there is always a very small chance something could go wrong, however unforeseen. Active Air Control will not be liable for any costs incurred by any such delays waiting for goods. Active Air Control advises strongly against booking Tradesmen until after goods are safely received and checked for this exact reason.

The small print…

Prices correct as displayed but are subject to change. The customer reviews and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Active Air Control Limited colleagues are accurate at the time of publishing. For the latest info, you should check the product page. This product comes with a minimum one year manufacturer’s guarantee, unless otherwise stated in the specification above.

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"Excellent service, delivery men were very cautious and thoughtful when delivering our dehumidifier. Good quality product at an excellent price plus speedy delivery"

Marc Rickman 

"We found the whole process from start to finish was excellent. Customer care was excellent and tracking was very helpful. Very good value for money. Highly Recommended"

The Martin family

"Next day fully tracked delivery , professional courteous delivery team. Brilliant fan a lot quieter than our old machine. Brilliant company with a huge range of stock."


"Missed my delivery. I contacted Customer Support  and they rung me back to re-arrange a free delivery which arrived the next day! Awesome customer service guys. Very friendly team. I am impressed."

A happy customer 

" Thank you for helping me select the correct product for my needs. My husband and I found it easy speaking to your team. Thank you for the useful technical product information"


" Our eBac dehumidifier was damaged in transit. Active Air Control collected the damaged dehumidifier the next day and supplied a new replacement dehumidifier...which turned out to be an upgrade to the one we had originally purchased. Brilliant product, Great customer  care, Very pleased overall.Keep up the great service. "

H. Stephenson

" We purchased 3 Industrial fan heaters for our business industrial unit. Fast delivery. Great price. Professional service. Thank you guys"


"Friendly delivery man went over and beyond with the pallet of electric heaters purchased from Active Air Control. We appreciate your help and admire your patience, Gary the delivery driver"

Calvin M. 

" Very happy with the Fast and Free delivery to Portsmouth. We will be recommending your company to our business partners  and friends. Fantastic company. Pleasure doing with you"

Harvey Litman 

"Thank you for getting back to  me when you said you would. Thank you for treating our enquiry with urgency. It's the little things that make a difference."

Casey T.