id,name,formula,input_rows,result,unit,limitations
d_scope,"HVAC recall notices coded in scope, 2000-01-01 to 2026-11-02",count of registry rows with in_scope = 1,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),221,notices,Scope rules in methodology; 337 screened candidates
d_recalls,"HVAC recalls excluding reannouncements, 2000 to 2026-11-02",in-scope notices minus reannouncements (9),rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),212,recalls,Expansions that add units count as recalls
d_units,"US units recalled in HVAC recalls, 2000 to 2026-11-02",sum of units_us_new (reannouncements 0; restated units removed),rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),37046100,units,"Firm-stated, mostly rounded; includes components such as motors and gas valves"
d_units_nps,US units recalled excluding portable space heaters,d_units minus portable space heater units,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),25985718,units,Same as d_units
d_recalls_nps,HVAC recalls excluding portable space heaters,d_recalls minus portable space heater recalls,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),150,recalls,
d_fireco,Share of HVAC recalls citing fire or carbon monoxide,recalls whose title or hazard text names fire or CO / d_recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),89.6,percent,190 of 212; keyword coding of CPSC text
d_fireco_nps,"Share citing fire or CO, excluding portable space heaters","same, portable space heaters removed",rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),90.0,percent,135 of 150
d_fire,Share of HVAC recalls citing fire,fire-coded / d_recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),73.6,percent,156 recalls
d_co,Share of HVAC recalls citing carbon monoxide,CO-coded / d_recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),18.4,percent,39 recalls
d_shock,Share of HVAC recalls citing shock or electrocution,shock-coded / d_recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),8.0,percent,17 recalls
d_burn,Share of HVAC recalls citing burn or scald,burn-coded / d_recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),24.1,percent,51 recalls
d_avg_units,"Average US units recalled per year, 2000 to 2025",units in 2000 to 2025 recalls / 26,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),1.4,million units per year,Lumpy: one recall can exceed a typical year
d_med_units,"Median US units recalled per year, 2000 to 2025",median of 26 yearly totals,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),854471.0,units,
d_avg_recalls,"Average HVAC recalls per year, 2000 to 2025",recalls 2000 to 2025 / 26,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),7.8,recalls per year,
d_2025,US units recalled in 2025 HVAC recalls (largest year since 2000),sum of 2025 units_us_new; max over 2000 to 2025,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),4677379,units,9 recalls; two recalls supply 4.6 million
d_2025_two,US units in the two largest 2025 HVAC recalls (attic fan motors and window air conditioners),"2,900,000 + 1,700,000",fact rows for recalls 25451 and 25320,4600000,units,Both firm-stated and rounded
d_screen_removed,CPSC records removed by the HVAC keyword screen,"8,358 records - 337 candidates",row 28 + scripts/out/coded_candidates.csv,8021,records,Screen tuned for recall; precision handled by hand review
d_out_scope,Screened candidates coded out of HVAC scope,337 candidates - 221 in-scope notices,scripts/out/coded_candidates.csv,116,notices,Includes 24 water heater recalls kept as a reference row
d_overrides,Candidates whose category was set by hand override after reading the description,count of coding_note != rule,scripts/out/coded_candidates.csv,80,notices,
d_co_1825,"CO-citing HVAC recalls in 2018 to 2025, and how many were boilers",count of CO-coded recalls 2018 to 2025; boilers among them,tables/registry.csv,17 (15 boilers),recalls,
d_2026,US units recalled in 2026 HVAC recalls to 2 November,sum of 2026 units_us_new,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),642734,units,8 recalls; year incomplete
d_top10,Share of all recalled US units in the 10 largest HVAC recalls,sum of top 10 units / d_units x 100,table t4 + d_units,55.2,percent,top 10 = 20460000 units
d_dehum,Dehumidifier share of HVAC recalled US units,dehumidifier units / d_units x 100,table t2,32.7,percent,12121000 units in 13 recalls
d_canada,Canada units stated in HVAC recall notices,sum of Canada units where stated,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),2325714,units,Only where the notice states them; not a Canadian total
d_co_bf,CO-citing HVAC recalls that involve boilers or furnaces,CO-coded boiler + furnace recalls / CO-coded recalls,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),36 of 39,recalls,
d_boiler_co,Boiler recalls citing carbon monoxide,CO-coded boiler recalls / boiler recalls,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),33 of 45,recalls,
d_rate_A,"HVAC recalls per year, 2000 to 2008",recalls in period / years,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),8.9,recalls per year,
d_unitsyr_A,"US units recalled per year, 2000 to 2008",units in period / years / 1e6,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),1.26,million units per year,
d_share_A,"HVAC share of all CPSC recall notices, 2000 to 2008",HVAC recalls / all CPSC notices x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),3.0,percent,Denominator includes reannouncements
d_coshare_A,"Share of HVAC recalls citing CO, 2000 to 2008",CO-coded / recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),20.0,percent,
d_rate_B,"HVAC recalls per year, 2009 to 2017",recalls in period / years,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),7.8,recalls per year,
d_unitsyr_B,"US units recalled per year, 2009 to 2017",units in period / years / 1e6,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),1.5,million units per year,
d_share_B,"HVAC share of all CPSC recall notices, 2009 to 2017",HVAC recalls / all CPSC notices x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),2.4,percent,Denominator includes reannouncements
d_coshare_B,"Share of HVAC recalls citing CO, 2009 to 2017",CO-coded / recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),7.1,percent,
d_rate_C,"HVAC recalls per year, 2018 to 2025",recalls in period / years,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),6.8,recalls per year,
d_unitsyr_C,"US units recalled per year, 2018 to 2025",units in period / years / 1e6,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),1.45,million units per year,
d_share_C,"HVAC share of all CPSC recall notices, 2018 to 2025",HVAC recalls / all CPSC notices x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),2.3,percent,Denominator includes reannouncements
d_coshare_C,"Share of HVAC recalls citing CO, 2018 to 2025",CO-coded / recalls x 100,rows 1 to 27 (all-recall counts) + tables/registry.csv (221 coded HVAC notices),31.5,percent,