Installing solar panels yourself is one way to keep overall costs down. However, there are dangers to adopting a DIY approach to solar panel installation.

Here are just three considerations to bear in mind before heading down the DIY route.

Firstly, by installing your own solar panels you may negate any manufacturer's warranty there is on the product. Check the rules carefully.

Secondly, poorly installed panels may have a negative effect to the structural integrity of your property. You will need to make holes in the roof, which is not generally considered a sensible DIY task.

Thirdly please be aware that working at heights is one of the most common ways that serious accidents happen. You may be handy with a saw or hammer at ground level, but on a windy roof, you may quickly find yourself in real trouble.

So, for most of us, using a qualified solar panel installer is the right choice. A qualified professional will ensure that your product is installed to manufacturers guidelines so it works effectively and you don't lose your warranty protection.

However, finding the right installer can be a lottery unless you follow a few simple guidelines.

1. Ask for recommendations

Do you know of anyone who has already had solar panels installed? Would they recommend their installer to you? Have they had any problems as a result of the installation – this can also help you refine your criteria.

2. Look for professional accreditations

Look for recognised industry professional accreditations. In the UK for example, the Microgeneration Certification Scheme (MCS) is an independent scheme that evaluates and certifies renewable energy products and installers against strict standards, thereby ensuring greater consumer protection. You can check out these standards on the professional body's website and search their database to find an accredited installer.

Many installers display logos of schemes they are accredited by on their website. However, it is advisable to double check with the actual scheme operator to make sure the accreditation is valid and up to date.

3. Do a bit of background research

When you have a short list of installers conduct your own research. Check out their website, does it feel professional, does it give you enough information to make you feel confident in their experience and competence? Look for professional accreditations and as mentioned above double check with the accrediting body for currency.

Speak to your short list. You need to feel satisfied that they can answer your questions to your satisfaction.

4. Cost

Though it is tempting to go for the cheapest price this is not always advisable. In many instances you get what you pay for. You should look for competitive pricing without feeling you are getting "a bargain" or "being ripped off".

Get quotes from a number of companies. By doing this you should get a feel for what is a fair price for installation. Also keep an eye out for quotes that are open and up front about all costs associated with the installation, you don't want to be stung for additional hidden costs halfway through the project.

5. Post installation service

You may also want to consider post installation services your solar panel installer offers. Do they offer regular check ups and warranties for their work. Is this service an additional cost or included in the overall price.

6. Warranties for their work

Does your installer offer guarantees for their work? Will they rectify any problems caused by installation? If so how long is the guarantee valid for and is there additional cost for this?

7. Availability

The one down side to choosing a good solar panel installer is that they are in demand, meaning you may need to wait a little longer for them to install your panels. However, in the long term, waiting an extra few weeks may mean a better price, service and guarantee.

So if you are thinking about getting solar panels installed it is worth doing a lot of the above ground work early on to ensure a smooth and quick installation.