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Daikin Altherma 3 R 8kW

Heat Pumps

Daikin Altherma 3 R 8kW

Compact monobloc design with integrated controls. One of the tidier-looking units on the market, with a well-regarded app and strong SCOP.

7.9
Great

~£14,200 installed (after £7,500 BUS grant: ~£6,700)

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How it scores

Efficiency (SCOP)(35%)
8.8/10
Noise level(15%)
8.0/10
Install simplicity(15%)
8.5/10
Warranty(15%)
6.0/10
Value(20%)
7.0/10

Scores based on published manufacturer specifications and weighted criteria — not lab testing. Methodology.

Specifications

SCOP
4.56
Type
air-source
Noise level
49
Heat output
8
Refrigerant
R32
Warranty
5
BUS grant eligible
Yes

What I noticed

Daikin's Altherma 3 R is well-regarded in the MCS installer community for its reliability and the quality of its controls interface. The Daikin D-Checker app gives installers and homeowners genuine insight into system performance, and the commissioning process is more straightforward than some competitors.

Who it suits

Homeowners who want a well-established brand with a large UK installer base and a clean installation. The monobloc design (everything in one outdoor unit) keeps the installation footprint small.

Watch for

The 5-year standard warranty can be extended to 10 years, but this usually requires a service contract. Check what's included in your installer's quote.

Sources — verified 4 June 2026

  1. Daikin UK, “Daikin Altherma 3 Low Capacity Monobloc (4-6-8 class) E(B/D)LA04-08EV3 — installer brochure” — daikin.co.uk
  2. Daikin, “Daikin Altherma low temperature monobloc Technical Data EBLA04-08E3V3 / EDLA04-08E3V3 (Data Book EEDEN22A)” — solar-distribution.baywa-re.pl

Altherma 3 R 8kW head-to-heads

Side-by-side scoring vs each alternative in our shortlist.

vs

Bosch Compress 7000i AW 8kW

Compare specs, scores, and verdict.

vs

Worcester Bosch Compress 7000i AW 8kW

Compare specs, scores, and verdict.

vs

Vaillant arotherm plus 8kW

Compare specs, scores, and verdict.

Other Heat Pumps on my shortlist

Bosch Compress 7000i AW 8kW
7.6

Bosch Compress 7000i AW 8kW

Solid mid-market option with a familiar brand and competitive pricing. Good SCOP and a straightforward install profile.

~£13,000 installed (after £7,500 BUS grant: ~£5,500)

Worcester Bosch Compress 7000i AW 8kW
8.1

Worcester Bosch Compress 7000i AW 8kW

Worcester Bosch air-source heat pump with R290 refrigerant. Familiar brand to UK homeowners, large installer network, and a competitive 7-year warranty.

~£13,800 installed (after £7,500 BUS grant: ~£6,300)

Vaillant arotherm plus 8kW
8.5

Vaillant arotherm plus 8kW

German-engineered ASHP with A+++ energy rating and among the lowest noise outputs in class at 46dB(A). Eligible for the Boiler Upgrade Scheme grant.

~£14,500 installed (after £7,500 BUS grant: ~£7,000)

Read next

Background reading and decision-tree pages that put this product in context.

Warm Homes Plan & the £7,500 BUS grant

Eligibility, the application route, and how the grant fits a heat-pump quote.

Stage 2: What could you actually save?

How a heat pump shifts the gas-vs-electric cost balance with solar.

Solar panel cost UK 2026

How solar pairs with a heat pump to lower the running-cost gap vs gas.