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Domestic-Heat-Pump-High-Res-6
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3.8kW Domestic Heat Pump

R13,319.33 incl VAT

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A small domestic heat pump is a very efficient water heating device. It uses a small amount of electricity to produce up to four times more heat energy. Unlike a solar geyser, a heat pump is not directly dependent on the sun and therefore it can operate day and night, winter and summers, ensuring the highest possible saving and piping hot water 24/7

SKU: FFD-3.8 Categories: ,

Product Description

Our own engineers oversee the assembly to ensure that the highest quality standards are met at all times. Our entire range of heat pumps use 410A and 134A ozone friendly refrigerants and each unit has been rigorously tested in the state of the art climate control testing facility to ensure Firefly heat pumps set the standard in efficiency and reliability. Our installation method ensures that you get more hot water out of your geyser.

Longevity
We offer a two year warranty, subject to your service plan, with a two year warranty on the heat exchanger

Let’s look at some maths on how our heat pumps saves you money

  • A 200 litre geyser has a 4KW element. A bath or shower in the morning for a family takes up about 30 minutes of use (drains the geyser) lets assume that the recovery time is 1.5 hours. The same in the evening. This gives us a total of 4 hrs per day
  • A geyser has a heat loss of 3.6 hours per day on average. Lets round this down to 3 hours. This gives us a total of 7 hours usage per day. Multiply this by the 4KW and by 30 days gives us a total of 840 KWhrs.
  • In most cases if the variable (number of hours) is correct the kilowatt hours should be between 60-80% of the total usage in a household (the average household). 840 x R1.47 = R1 234.80 (residential incl. VAT)
    A FFD-5.4 has a power input of 1.28 KW and an output of 5.4 KW (or kilojoules)
  • We use the same maths keeping the variable the same
    1.28 x 7hrs x 30 days = 268.80 KWhrs     68.80 KWhrs x R1.47 = R395.14

That’s a savings of 571.20 KWhrs or the equivalent of 571KG of CO2 – The rand value savings is R839.66

How to choose the right domestic heat pump for your hot water requirements

As we have sold and installed about 8000 domestic heat pumps we believe that we can give you great advice here from our experience.  Most domestic geysers use 1kW of electric element to 50L of hot water storage.

Therefore if you were not running out of hot water your system requirements will be as follows

  • 3.8kW on a 150L geyser
  • 5.4kW on a 200L geyser
  • 7.6kW on a 300L geyser or 2 x 150L geysers in series
  • 9.3kW on 2 x 200L geysers in series

However when you have multiple geysers this can change if you have 2 x 200L geysers and there is only a few of you in your home.  You could step down on the heat pump size as your water storage is quite high.  Remember that it will just take a bit longer for the smaller heat pump to reheat the water.  In my home I have a 400L tank with a baby 3.8kW heat pump and I never run out of hot water.  For professional advice please do not hesitate to contact us

Firefly_Domestic-Heat-Pump-Sizing-Guide

Technical Specifications

Click here to download our PDF Trouble Shooting Instructions For Domestic Heat Pumps

Should you require technical assistance for your heat pump please visit our FAQ page for further details

Model No FFD-3.8
Power Supply 220V~240V/1Ph/50Hz
Max Outlet Water Temp  60℃
Water Heating A20/W15~55
Heating Capacity 3,8kw
Hot Water Output 80 L/h
Input (water pump included) 0,9kw
COP 3,89 W/W
Rated Current 3,97 A
Compressor Mitsubishi
Water Pump WILO
Refrigerant Quantity 650g
Refrigerant Type R410A
Outdoor Noise Level db(A) 52
Dimensions L W H 935 x 282 x 545
Weight NG 49kg WG 54kg

Heat Pump FAQ's

Q: How does a heat pump work?

A: A heat pump works like an air conditioning unit in reverse. It extracts heat from the ambient air surrounding it, enabling it to heat the refrigerant which is then compressed causing it to get even hotter. This is then run through a heat exchanger in which the water is heated.

Q: What are the expected savings?

A: Savings will depend on the average ambient temperature where the heat pump is installed. If you look at the average temperature in SA of 22 degrees, a heat pump will use 1KW of energy to produce 4KJ of heating energy. This equates to savings up to 75% of your hot water generation costs.

Q: How long does it take to heat the water up?

A: The size of the heat pump installed and the ambient temperature plays a big part, however in ideal conditions it will heat up quicker than a typical element based geyser.

Q: How long does it take to install?

A: +- 4-5 hours on a standard installation with an existing geyser for a domestic Heat Pump. A commercial is totally dependent on the site and the piping configuration required.

Q: What is the maximum temperature?
A: 55 degrees is factory recommended.

Q: How often does it need to be maintained?

A: In most cases a service is needed annually, however if you are in an area with bad water, dirty or polluted air this can be as much as a quarterly service.

Q: Can it be used with an existing element in the geyser?
A: Yes.

Q: Heat pump vs Solar Hot Water.

A: Heat pumps work at any time of the day, a solar hot water system will only work 4-5 hours a day, after which the element needs to start working. 95% of hot water is used when the sun is not shining.

Tests done by Eskom showed solar thermal saved on average 26% of hot water generation costs and a heat pump 67%.

Solar Thermal is excellent when considering an off – grid solar PV solution, however the capacity of the hot water tank needs to be taken into account.

Q: What is the life span of a heat pump?
A: +- 15 years. If looked after properly.

Comments About Us

Chris – Starlite

We were referred to Firefly through our Electrician and team they were helpful and friendly. Their product knowledge was excellent and Helga was great in assisting us with opening an account. We would highly recommend Firefly and look forward to future business with them.

Chris – Starlite

2015-06-11T08:17:14+00:00

Chris – Starlite

We were referred to Firefly through our Electrician and team they were helpful and friendly. Their product knowledge was excellent and Helga was great in assisting us with opening an account. We would highly recommend Firefly and look forward to future business with them.

Ken – Hillcrest Electrical

Firefly have always met the standards of the customers they deal with. We are confident in their services and feel their products are worth the money spent.

Ken – Hillcrest Electrical

2015-06-11T08:23:47+00:00

Ken – Hillcrest Electrical

Firefly have always met the standards of the customers they deal with. We are confident in their services and feel their products are worth the money spent.

Aksons Wheels

We contracted Firefly to reduce our huge electricity bill as we were averaging R31 485 at the time. Firefly's consultant immediately replaced all of our florescent bulbs to LED. The total cost was around R137 799. After a few month, we noticed our electricity bill dropped to R20 276 - a huge saving of R11 209 pm. The amazing fact was it was just a simple change of light bulbs - that's all! This translates, that in one year we would cover up te cost of installation in savings. Firefly's service was excellent throughout and very helpful, making sure they got us this incredible saving. I would definitely recommend Firefly.

Aksons Wheels

2015-11-17T17:19:25+00:00

Aksons Wheels

We contracted Firefly to reduce our huge electricity bill as we were averaging R31 485 at the time. Firefly's consultant immediately replaced all of our florescent bulbs to LED. The total cost was around R137 799. After a few month, we noticed our electricity bill dropped to R20 276 - a huge saving of R11 209 pm. The amazing fact was it was just a simple change of light bulbs - that's all! This translates, that in one year we would cover up te cost of installation in savings. Firefly's service was excellent throughout and very helpful, making sure they got us this incredible saving. I would definitely recommend Firefly.

St Mary’s

Firefly was introduced to St Mary's approximately four years ago with great success. They installed 21 Heat Pumps in the Nurses Home and these have been working well with minimal maintenance.The service is impeccable and efficient,
the management professional. Their response time is excellent and they are quite happy to show our plumber the ropes. Funds allowing we will expand the Heat Pumps to the rest of the Hospital.
You would go a long way in finding a similar supplier. We would not hesitate in recommending FireFly heat pumps to anyone.


Chris van der Merwe - Manager: Technical Services

2016-01-12T13:21:39+00:00
Firefly was introduced to St Mary's approximately four years ago with great success. They installed 21 Heat Pumps in the Nurses Home and these have been working well with minimal maintenance.The service is impeccable and efficient, the management professional. Their response time is excellent and they are quite happy to show our plumber the ropes. Funds allowing we will expand the Heat Pumps to the rest of the Hospital. You would go a long way in finding a similar supplier. We would not hesitate in recommending FireFly heat pumps to anyone. Chris van der Merwe - Manager: Technical Services

We have been dealing with Firefly for over 7 years and we feel their service is good, prices are competitive and the team are very accommodating, particularly with sourcing stock. We would happily recommend Firefly to businesses and friends.


Jacques Venter – Synergy Energy Solutions

2016-02-10T08:49:12+00:00
We have been dealing with Firefly for over 7 years and we feel their service is good, prices are competitive and the team are very accommodating, particularly with sourcing stock. We would happily recommend Firefly to businesses and friends. Jacques Venter – Synergy Energy Solutions

We found Firefly on the internet and find their service is helpful and efficient as always. Our orders have always been delivered on time and to standard. We would refer Firefly’s services to anyone looking for good service and helpful staff.


Steve King – Prestige Plumbing

2016-02-10T08:51:48+00:00
We found Firefly on the internet and find their service is helpful and efficient as always. Our orders have always been delivered on time and to standard. We would refer Firefly’s services to anyone looking for good service and helpful staff. Steve King – Prestige Plumbing

We found Firefly on Google and spoke with Jacki who is superb! Firefly is a competitive supplier that is always striving to keep the customers happy, will definitely recommend it to people as they have a good customer and supplier relationship.


Lisa Ncube – Electroflex

2016-02-10T08:52:23+00:00
We found Firefly on Google and spoke with Jacki who is superb! Firefly is a competitive supplier that is always striving to keep the customers happy, will definitely recommend it to people as they have a good customer and supplier relationship. Lisa Ncube – Electroflex

Firefly are always knowledgeable, informative and helpful. Their heat pumps are the best in the country, tailor to our needs and their delivery times are very good. Overall our experience has been very good and we find them to be a good organisation with good products


Brian Cochraine – Heat Pumps SA

2016-02-10T08:53:23+00:00
Firefly are always knowledgeable, informative and helpful. Their heat pumps are the best in the country, tailor to our needs and their delivery times are very good. Overall our experience has been very good and we find them to be a good organisation with good products Brian Cochraine – Heat Pumps SA

We were recommended to Firefly and our first encounter with them was pretty good with no issues. We can pick up the phone at any time for help – their aftercare service is great. We enjoy working with Firefly and would highly recommend them.


Jens Clausen – Langamanzi Technology

2016-02-10T08:53:51+00:00
We were recommended to Firefly and our first encounter with them was pretty good with no issues. We can pick up the phone at any time for help – their aftercare service is great. We enjoy working with Firefly and would highly recommend them. Jens Clausen – Langamanzi Technology

SA Heat Pumps Association recommended we contact Firefly and so far we are very happy and find they offer a quality service with helpful staff.


Franco Diedericks – Express Mining Supplies

2016-02-10T08:54:14+00:00
SA Heat Pumps Association recommended we contact Firefly and so far we are very happy and find they offer a quality service with helpful staff. Franco Diedericks – Express Mining Supplies

The ABH is a registered Non Profit Organisation (NPO 002 139) that has its head office in Chatsworth Durban. During the course of 2011 /2012 we installed Firefly Heat Pumps as a means to manage our energy costs at our ABH Children’s Home and the ABH Dayanand Gardens Home for the Aged.  We are pleased to report that we were able to recoup the expenses for the purchase and installation of the heat pumps within the first year of its operation.  We also found that the heat pumps have been able to provide our water heating needs adequately to the point where we do not use the conventional electrical heating elements. The pumps are robust with very little down time – provided that they are serviced as prescribed by the manufacturers.


Rajish Lutchman - Chief Executive Officer


 
2016-02-10T08:56:45+00:00
The ABH is a registered Non Profit Organisation (NPO 002 139) that has its head office in Chatsworth Durban. During the course of 2011 /2012 we installed Firefly Heat Pumps as a means to manage our energy costs at our ABH Children’s Home and the ABH Dayanand Gardens Home for the Aged.  We are pleased to report that we were able to recoup the expenses for the purchase and installation of the heat pumps within the first year of its operation.  We also found that the heat pumps have been able to provide our water heating needs adequately to the point where we do not use the conventional electrical heating elements. The pumps are robust with very little down time – provided that they are serviced as prescribed by the manufacturers. Rajish Lutchman - Chief Executive Officer  

The Forest Mushrooms Team

We would like to thank you for your guidance and support regarding our upgrade from standard 5 foot florescent tubes to your 5 foot 4000K LED fluorescent tubes.
Our growing rooms are set up with 22 lights per room, which included standard 5 foot fluorescents tubes, electronic ballasts, magnetic ballasts and starters. The running cost was roughly R450 per 8 hour day. After the ballasts and old tubes were removed the new cost was R80 per 8 hour day. Which is an 82o/o saving. With a total of 252 tubes swapped out this will definitely make a significant cost saving. We also found that the older magnetic ballasts got incredibly hot and melted the plastic fittings that they were in. Thus the removal of those ballasts most probably has prevented a potential fire hazard! Once again we would like to thank you all for your help and your friendly and prompt service.
Chris, Mark & Steven - The Forest Mushrooms Team

2016-05-16T08:01:28+00:00
We would like to thank you for your guidance and support regarding our upgrade from standard 5 foot florescent tubes to your 5 foot 4000K LED fluorescent tubes. Our growing rooms are set up with 22 lights per room, which included standard 5 foot fluorescents tubes, electronic ballasts, magnetic ballasts and starters. The running cost was roughly R450 per 8 hour day. After the ballasts and old tubes were removed the new cost was R80 per 8 hour day. Which is an 82o/o saving. With a total of 252 tubes swapped out this will definitely make a significant cost saving. We also found that the older magnetic ballasts got incredibly hot and melted the plastic fittings that they were in. Thus the removal of those ballasts most probably has prevented a potential fire hazard! Once again we would like to thank you all for your help and your friendly and prompt service. Chris, Mark & Steven - The Forest Mushrooms Team

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