How can you do that?
By re-examining what you are doing "in" your business. Your type of company should have year-round revenue. How can you make that happen? What can you do in the winter to boost sales? Can you deliver wood to people who use their fireplaces? Can you do your air-conditioning maintenance in the winter as a "special" service?
Whatever the case may be, you need to be proactive instead of reactive, especially if you have a good client base. How can you upsell or add value? Can you raise your rates? Again, you need to grow your way to a bigger business instead of cutting your way to one, as you can only cut expenses so far before performance suffers.
Look at other similar companies in other locations to see what they are doing--and borrow best practices. Growth on the top line is the only way to grow the bottom line. That will entail you doing some things you may not be used to doing--but the results will be worth it in the end.
All the best.