A Versatile Gas-Fired Steam Boiler For Your Unique Home. AW Heating & Air Conditioning in Lincoln has the perfect gas-fired steam boiler to keep your home cozy and comfortable season after season. The Lennox® GSB8-E comes with remarkable benefits. Our team is here to install yours, or help you maintain your existing steam boiler. Contact AW Heating & Air Conditioning at 402-318-5351 for all your boiler-related needs in the Lancaster County area. Or, schedule an appointment with our online scheduler. We look forward to serving you!