--- title: "Solar Water Heater Payoff" type: "article" slug: "solar-water-heater-payoff" url: "http://localhost/article/solar-water-heater-payoff/" markdown_url: "http://localhost/article/solar-water-heater-payoff.md" published_at: "2026-03-13T21:01:57+00:00" modified_at: "2026-03-13T21:01:57+00:00" featured_image: url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg" excerpt: "BASIC program to calculate the financial payoff period of a solar water heater versus keeping savings in a bank account, factoring in installation cost, fuel savings, and interest rates. Full type-in listing included." category: - name: "Timelinez" slug: "timelinez" taxonomy: "category" url: "http://localhost/category/periodicals/timelinez/" post_tag: - name: "BASIC (programming language)" slug: "basic-programming-language" taxonomy: "post_tag" url: "http://localhost/tag/basic-programming-language/" - name: "TS 1000" slug: "ts1000" taxonomy: "post_tag" url: "http://localhost/tag/ts1000/" - name: "Type-in program" slug: "type-in-program" taxonomy: "post_tag" url: "http://localhost/tag/type-in-program/" model: - name: "Timex/Sinclair 1000" slug: "ts-1000" taxonomy: "model" url: "http://localhost/model/ts-1000/" indiv: - name: "Howard Collins" slug: "howard-collins" taxonomy: "indiv" url: "http://localhost/indiv/howard-collins/" publication_r: id: 21571 title: "Timelinez" type: "periodical" url: "http://localhost/periodical/timelinez/" authors_r: - name: "Howard Collins" slug: "howard-collins" taxonomy: "indiv" url: "http://localhost/indiv/howard-collins/" volume: "1" issue: "5" issues_articles: - id: 38795 title: "Timelinez v1 n5" type: "issue" url: "http://localhost/issue/timelinez-v1-n3-2/" pages: "5" pubdate: "November 1983" archive_link: false --- # Solar Water Heater Payoff BASIC program to calculate the financial payoff period of a solar water heater versus keeping savings in a bank account, factoring in installation cost, fuel savings, and interest rates. Full type-in listing included.