knowledge article

Ask The Experts: What To Expect From An In-Home Energy Audit


One of the standout reasons for the Harrisons Solar success story is our pledge to stand by our customers every step of the way. From the initial phone call to completing paperwork, right through to the installation of Solar Systems, ventilation, insulation and heat pumps.

The key ingredient to this pledge is our free in-home energy consultation so our regional energy experts can gauge your household needs and plan the perfect System to save you money and provide a healthy home. We won't specify something you don't need.

But what's involved in this home audit? What do you need to do to prepare and what will you learn?

We spoke to one of our Auckland Harrisons Solar franchisees Dan Brebner about what you can expect.

_48I7145 Dan Brebner HES Auckland .jpg
Dan Brebner

Do people need to know what they are looking for before they contact Harrisons to arrange an in-home consultation?

It depends. Usually, when people ring in to our call centre they have a good idea of what they're after. With the amount of information on the Harrisons Solar website to help them understand what is on offer, many already know how a Solar System, ventilation, insulation or a heat pump can help them. But as well as checking their homes for the practicalities around installing these Systems, there's still a lot we can teach them about how they work.

In some instances customers may want a Solar System and then when I visit, I see they have terrible “crying windows”, in which case I'll suggest they look at ventilation as well. I always tell them, in terms of a healthy home, insulation and ventilation is the first priority and then a heat pump so you are creating a warm home that's easier and more cost-effective to heat.

When you visit a customers home, what answers can they expect?

When considering Solar there are three main factors to consider: roof space, budget and use of power. I usually start by asking what they already know about Solar power and then show customers a presentation which explains things in layman's terms.

This includes:

  • How it works
  • How it gets power from the roof to the home
  • How to utilise that power
  • Explaining the difference in our products from competitors (warranty length, awards, specs etc)
  • Covering what we offer and why we offer it (all Harrisons Solar experts are business owners, not commission sales people)

When explaining how best to utilise Solar generated power, how much do you stress the need for them to change habits?

If they are choosing to not put in a battery right away, It's really important to try to re-educate people about using power during the day when their Solar System is generating free power.

Together, we look at the power bill over the last year and see what the household has used and then aim for between 35% and 50% savings. This is usually achievable during the day without a battery. It's good at this point to see if the household has electric hot water because there's big savings to be made there.

We do a lot of education at these meetings. I always say ‘I can get you the best Solar System in the world but if you don't use the Solar power, then there's no point'. A lot of people think with Panels on the roof they're going to almost eliminate their grid power bill, but it doesn't work like that.

What counts is how you use your power for free: things like putting dishwashers on timers and delayed starts and putting power diverters or timers on hot water cylinders. Getting Solar is very much a habit shift until you get to battery storage. There's a lot of interest in Solar batteries but whats really needed is more education on the subject. The easiest way to explain Solar is: it will generate power during the day when the sun is out so use it then, after which you either divert the excess to a battery or the grid.

What are the potential savings to power bills?

Whilst Solar savings are all about usage and unique to each home, with our other products we can give some actual savings data. Although everyone uses their heating differently, we can show that whereas a normal heater will use 1kW and generate 1kW, a heat pump will use 1kW of power and gen up to 5kW of heat.

With ventilation we explain how a heating bill can be reduced by half once a home has been dried. This is because It's a lot easier to heat and ventilation costs around 20c a day to run. Non-insulated homes can lose 40% of heat through the ceiling and another 15% through the floor, so if you do them together you save on heating bills and have a much healthier home.

How should people prepare for an energy consultation?

It great for customers to have their power bills so we can see usage and look at where to make savings. If the house is relatively new then it helps to have roofing plans too. We'll do the rest and help explain what we're doing and how we can help.

After sitting down and explaining the products, what do you need to see and check before moving ahead with an order?

For Solar It's important to walk around the house, look at the roof, switchboard and meter box and plan where Panels would go and which direction they'd face. North is always best, but we'd check for any shading. If the household is sunny in the afternoon, you'd look at putting more on the western face to get more sunlight then.

For heat pumps we check that there's an external wall, whether there's a ceiling cavity or underfloor space and how far the product would be from the switchboard.

For ventilation we have to know if there is enough room to install the unit in the ceiling, whether the ceiling is made of gib or tiled and, if the property is two storeys.

For insulation, we must check anything that can affect it such as downlights, heat lamps or un-ducted fans. We check underfloor access as well.

How long should people expect a consultation to last?

For ventilation and insulation it takes 45 minutes to an hour, heat pumps are between 30 and 45 minutes and Solar consultations can take an hour to an hour and a half.

If you're keen to have one of our experts carry out a free, in-home energy audit and consultation contact us on 0800 00 33 54 or check out your nearest Harrisons Solar franchisee via the website and we'll arrange to visit at a time that suits you.

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