If you enter air conditioning contractor into Google, you get over 69 million results in .58 seconds. How do you differentiate yourself and get more attention than your competitors? Without breaking the bank there are a minimum number of items that you should at least make sure you've taken care of.
1. I am always surprised at the number of "companies" that don't have webpages. It's 2015! A search for "cheap website" yields a whopping 373,000,000 results. I think that Wix.com has a great system, they have a ton of really good looking templates and are adding new abilities all the time. I think there are better options for e-commerce companies, but HVAC and Home Performance Testing businesses would greatly benefit from their use.
2. I love all of my customers, especially those that have written glowing testimonials. (hint hint) Putting your name out there to support of me and my products? That's awesome! Again there are people a ton of without websites, but some don't even have a logo. You need to have a brand that people start to recognize. It doesn't have to be fancy or super creative. Can't think of anything? Outsource the job for $5 on Fiverr, (really!) or find a freelance writer from another country on Elance. There are PhD's in India working for peanuts (relatively speaking). You have no excuse. I created the Vent Cap Systems 3D image below, in under 2 minutes, and for free, with Fatbrain.com. They have their own free logo creator online.
3. Does Google even know where you are? Google wants to provide the most relevant results to their customers. If they don't know where you are, or worse they think you're somewhere else, you won't get recommended. It's called NAP (Name, Address, and Phone Number). It can be the #1 detractor from your site's credibility rating (ie. Google isn't going to show your page). You can update your info business info on Google here.
Just like the old adage, "you can't get where you want to go if you don't know where you are now" - if Google doesn't know where you are, you're not going to get where you want to be!