Perform heating maintenance on maintenance bay systems. Two propane furnaces one 90% in the new building and one 80% in the old building. Clean flame sensors Inspect exhausts verifying safe for operation -no concerns Inspect burners for blockages - clear Replace filters and perform temp rise verifying proper airflow Inspect hot dawg heaters verifying heat and units safe for operation found no concerns with any of the furnaces/heaters in mechanics bay all systems properly operating Inspect furnace in closet for south bathroom and ranger station Clean flame sensors Inspect exhaust verifying safe for operation - no concerns Replace filters Check temp rise on units Inspect the electric furnace for north bathroom verifying proper operation Units properly operational at this time no concerns Perform heating maintenance on lodge twin and single system. Verifying heat operation clean flame sensors amp check motors - no concerns Check delta T Replace filters Set thermostats back to