Minus 21 Refrigeration Are you looking for an expert refrigeration, heating & air conditioning company in servicing Kapiti, Horowhenua and the Manawatu? Minus 21 Refrigeration is a family-owned business operated by Michael Slobbe who is always focused on finding the best solution for each customer. Minus 21 Refrigeration's professionalism and reliability have made them well-known in Horowhenua among homeowners...