# Sustainability

## Passive Solar – What Does It Mean?

Do you want a house that is filled with natural light in the summer without overheating, and minimises your heating bills in winter? ……….If you do, then a passive solar house is what you need. Here are some of the…

## What Size Rainwater Tank 3

Other posts explain how to calculate: How much rain you can collect and How to work out how much water you will need to last for a month without rain. From your calculations find out the month of lowest average…

## Rainwater – Safety

Millions of people have lived long healthy lives drinking rainwater . . . . but that’s doesn’t mean that rainwater is entirely pure, or completely safe for everyone. Composition The following Chemicals are commonly found in rain: Hydrogen, Ammonium, Calcium,…

## Insulation Basics – Calculating R Values

A previous post –introduced R and U values In this post we will demonstrate how to calculate R values. Well it all starts with the thermal conductivity of the building material. The ‘k’ value. This is a measure of how fast…

## Insulation Basics – ‘R’ and ‘U’ Value

R Value R1.5 Batts, R2.0 Batts……. all the way up to R6.0 Batts, but what does it all mean? The R value is a measure of the thermal resistance of the component of the material. In other word how hard…

## Induction Hobs

Why we wanted an induction hob About a year ago we started thinking about going all electric. We had previously gone from gas ducted air heating to reverse cycle units and installed photo voltaic solar panels. After installing a heat…

## Making The Most From Your Solar Panel

To get the best value from your solar panels you need to maximise your use of power when the panels are generating, and avoid taking grid power during that time. This limits the kW you generate that are paid at…

## Coffee Makers

I see some display homes with expensive built in espresso machines costing thousands. I’m afraid I’m for the inexpensive, and easy life, so I am happy to use a Nespresso machine which cost me less than \$200 (My milk frother…

## Rendered Foam Walls

This addendum was added to an original Post from 2014 as there has been a lot of publicity recently (late February 2019) about foam panels and certification has been removed from certain types of panels. A particular issue for apartment…

## Ancient Air Conditioning

I’ve just returned from the City of Yazd in Iran and as usual I have been looking at houses and buildings, I bet you thought air conditioning is a fairly recent invention but that is what these wind tower structures…