We often have people ask us about owning multiple domains. Some have amassed a deep and broad assortment. They want to know if they should keep all the domains they've acquired. If you're not sure why you have domains you've registered, it's probably a good time to stop and assess. An even better time would be before you buy, but sometimes it feels good to hold your options if you're not sure. It's just that it can get costly and often for little, if any, benefit.
What's important to know is that more domain names is not necessarily (or even usually) better. In fact, in many, if not most, cases, one well-chosen domain name that is consistently promoted is all a company needs.
Even if you have several domains, for search engine optimization reasons, you work smartest by choosing one to be your primary domain. If you've been online for a while, this will be the one that you've used longest and most consistently. Ideally, it will reflect your company name and include keywords like heating, cooling, air conditioning, plumbing, etc. It doesn't matter if your domain name is long due to such keywords.
Funneling all traffic intended for your site to one well-seasoned, keyword-rich domain will help your website's search engine visibility. If you own multiple domains, they should all be set to permanently forward, or redirect, website traffic to the one you choose as your primary domain (also known as the 'resolving' domain because it is the address at which the site ultimately appears no matter which domain you used to get there). The reason for this is that redirected domains do not, themselves, acquire any 'seasoning', or search…